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Question 1 of 110
1. Question
A ball is thrown up into the air. At the highest point of its trajectory the ball:
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Question 2 of 110
2. Question
A ball of mass 200g moving with a velocity of 8m/s collides and sticks with another ball of mass 300g moving in the same direction with velocity 4m/s. What is the common velocity of the balls after the collision?
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Question 3 of 110
3. Question
A boy holds the end of a rubber cord from which hangs a solid metal ball, if the boy whirls the ball in a horizontal circle, keeping his hand still. If the rubber cord breaks when the ball is at a point on the circle, in what direction will the ball move?
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Question 4 of 110
4. Question
A force of 20N applied parallel to the surface of horizontal table is just sufficient to make a block of mass 4kg set for motion. Find the acceleration when the force is doubled.
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Question 5 of 110
5. Question
A man walks 1km due east and then 1km due north. His displacement is
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Question 6 of 110
6. Question
A motor car moves with a velocity of 20ms on a rough horizontal road and covers a displacement of 50m. Find the coefficient of dynamic friction between the type and the ground (g = 10 ms-2)
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Question 7 of 110
7. Question
A physics student standing on the edge of a cliff throws a stone vertically downward with an initial speed of 10.0 m/s. The instant before the stone hits the ground below, it is travelling at a speed of 30.0m/s. If the physics student were to throw the rock horizontally outward from the cliff instead, with the same initial speed of 10.0 m/s, what is the magnitude of the velocity of the stone just before it hits the ground?
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Question 8 of 110
8. Question
A quantity is defined as the product of cross-sectional area and change in momentum per unit length. Which of the following is its SI unit?
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Question 9 of 110
9. Question
A rectangular concrete block 40cm x 30cm x 60cm of mass 10kg rests on a horizontal flat surface. What is the minimum pressure it can possibly exert on the surface?
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Question 10 of 110
10. Question
A simple hydrometer consists of uniform cylinder suitably weighted to float upright B in most common liquids. It is graduated to read the relative density of a liquid directly. Which of the following is NOT correct?
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Question 11 of 110
11. Question
A stone which is dropped into a dry well hits the bottom in 2.2s. How deep is the well? (Take g = 10m/s2)
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Question 12 of 110
12. Question
A woman whose mass is 70 kg sits 2.4m from the fulcrum of a seesaw. At what distance from the fulcrum should a 60kg B man sit to balance the seesaw?
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Question 13 of 110
13. Question
An air bubble trapped at a depth in a liquid rises to the surface. Which of the following I is true about its mass and density as it rises?
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Question 14 of 110
14. Question
Complete the following sentence: The operation of a hydraulic jack is an application of
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Question 15 of 110
15. Question
Complete the following statement: Today, the standard meter is defined in terms of
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Question 16 of 110
16. Question
Convert 30 meter per second to centimeter per minute
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Question 17 of 110
17. Question
During a football match, player Akicks the ball 40m, 30oE of S to player B who instantly kicks it 30m,60oE to N. What is the magnitude of the resultant displacement of the ball?
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Question 18 of 110
18. Question
How much work is done against gravity in sliding a 500g object through 2m up a smooth plane that is inclined at 30” to the horizontal? (g=9.8ms-2)
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Question 19 of 110
19. Question
If a small body of mass m is moving with angular velocity w in a circle of radius r, what is its kinetic energy?
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Question 20 of 110
20. Question
In free fall ,two balls of masses 20kg and 10kg were dropped from a height. If the ball with the smaller mass reached the ground after 4 s, what is the difference between the time the two balls reach the ground?
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Question 21 of 110
21. Question
In what distance can a 1,500kg automobile be stopped if the brake is applied when the speed is 20m/s and the coefficient of sliding friction is 0.7 between the tyres and the ground?
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Question 22 of 110
22. Question
The highest point of a simple pendulum bob is 5cm vertically above the lowest point as it swings to and fro between the two extreme ends. At what velocity does it swing past the lowest point (equilibrium point) where the string is vertical? (take g= 10m/s2)
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Question 23 of 110
23. Question
Three vectors A,B, and C add together to yield zero: A + B + C = 0. The vectors A and C point in opposite directions and their magnitudes are related by the expression: A = 2C. Which one of the following conclusions is correct?
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Question 24 of 110
24. Question
Which of the following could be measured in the same units as force?
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Question 25 of 110
25. Question
Which of the following does not affect the pressure at a point beneath the surface of a liquid?
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Question 26 of 110
26. Question
Which of the following pairs contains one vector and one scalar quantity?
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Question 27 of 110
27. Question
Which of the following statements is correct
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Question 28 of 110
28. Question
Which of the following is a measurement taken with venier calipers
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Question 29 of 110
29. Question
Which of the units of the following physical quantities are derived?
I. Area
II. Thrust
III. Pressure
IV. Mass.CorrectIncorrect -
Question 30 of 110
30. Question
Which one of the following situations is not possible?
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Question 31 of 110
31. Question
If C is the thermal capacity of a material of mass m and S is its specific heat capacity, then
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Question 32 of 110
32. Question
A block car be more uncomfortably hot on a warm day than a white car because
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Question 33 of 110
33. Question
A little sag is left in overhead telephone wires
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Question 34 of 110
34. Question
A piece of copper wire of length 100cm at 30°C is heat to 120°C. If its linear expansivity is 1.8 x 10-4/K, its new length is
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Question 35 of 110
35. Question
A sample of a monatomic ideal gas is originally at 20°C. What is the final temperature of the gas if both the pressure and volume are double?
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Question 36 of 110
36. Question
A volatile liquid used for cooling purpose in refrigerator is
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Question 37 of 110
37. Question
Complete the following statement: A temperature decreases of 30°C is equal to a temperature decrease of
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Question 38 of 110
38. Question
Complete the following statement: Bimetallic strips used as adjustable switches in electric appliances consist of metal strips that must have different
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Question 39 of 110
39. Question
Heat can be transferred from one end of a metal rod in contact with heat to the other end which is in contact with heat through
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Question 40 of 110
40. Question
Heat , supplied or removed from a system which causes a change of state without a change in temperature is
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Question 41 of 110
41. Question
How many atmospheres of pressure must a litre of gas, initially at a pressure of 1 atmosphere and temperature -20°C, be after it has been compressed to 1 /21itre at 40°C?
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Question 42 of 110
42. Question
On a cold day, a good conductor X feel; colder to the torch than a poor conductor Y because
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Question 43 of 110
43. Question
The boiling point of water does not depend on
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Question 44 of 110
44. Question
The ice and steam points of a local liquid in glass thermometer are 10a and 90a respectively. What will the thermometer read when the temperature is 30°C?
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Question 45 of 110
45. Question
The lower and upper fixed points on a thermometer are 40 and 120 respectively. Its reading at 60°C is
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Question 46 of 110
46. Question
The pressure exerted by a given mass of gas in a container
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Question 47 of 110
47. Question
The temperature in an electric iron is regulated by
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Question 48 of 110
48. Question
Water has an anomalous behaviour between 0°C and 4°C. Which of the following is correct?
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Question 49 of 110
49. Question
What is the Celsius equivalent of 50.0° F?
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Question 50 of 110
50. Question
When water is heated in a glass vessel, the level first falls and then rises because
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Question 51 of 110
51. Question
Which of the following quantities of water has undergone the greatest change from its heat content at melting point?
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Question 52 of 110
52. Question
Which would cause a more serious burn: 30g of steam or 30g of liquid water, both at 100°C and why is this so?
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Question 53 of 110
53. Question
A certain radioactive element has a half-life of 20 years. How long will it take the activity to become 14 of its original?
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Question 54 of 110
54. Question
A plane progressive wave is represented by y = 2sin (100πt-0.2nx) where all the symbols have their usual meanings. What is the velocity of the wave?
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Question 55 of 110
55. Question
A point on a stationary wave where there is no movement of the medium is called
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Question 56 of 110
56. Question
A uniform wave has a spread of lOm/s and a period of 0.5s. The distance between two nearest crests is
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Question 57 of 110
57. Question
A vibrating string has a tension of 40N and produces a note of 200Hz when plucked in the middle. When the length of string is unaltered and the tension is increased to 160N, the frequency becomes
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Question 58 of 110
58. Question
An organ pipe closed at one end is 80cm long. Determine the frequency of the fundamental note assuming that the speed of sound in air is 340m/s?
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Question 59 of 110
59. Question
As transverse wave moves through a medium, the particles of the medium
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Question 60 of 110
60. Question
The sound heard after the reflection of sound wave from a plane surface is known as
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Question 61 of 110
61. Question
Which of the following properties is not common to all waves?
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Question 62 of 110
62. Question
Which of the following statements is true about electromagnetic waves?
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Question 63 of 110
63. Question
Which one of the following statements concerning electromagnetic waves is false?
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Question 64 of 110
64. Question
Which one of the following statements concerning waves is false?
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Question 65 of 110
65. Question
A light sensitive area at the back of the eye ! where images are formed is called
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Question 66 of 110
66. Question
A luminous object is placed at a giver, distance from a converging lens of focal length 12cm and a real image is produced. Find tire image distance if it is equal to the object distance.
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Question 67 of 110
67. Question
An object is placed 15cm in front of a concave mirror of radius 40cm. The image formed is
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Question 68 of 110
68. Question
How far from a concave mirror of radius 120cm must an object be placed such that its erect image is four times its natural size?
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Question 69 of 110
69. Question
How many images are formed when an object is placed in front of two plane- mirrors that are inclined at angle 30″ to each other?
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Question 70 of 110
70. Question
Professor Peters walks directly towards a plane mirror at a speed of 0.25m/s. Determine the speed of the image relative to him.
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Question 71 of 110
71. Question
The angle of incidence in a denser medium when the angle of refraction in the less dense medium is 90o is called a
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Question 72 of 110
72. Question
The driving mirror is a
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Question 73 of 110
73. Question
The following are types of a converging lens except
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Question 74 of 110
74. Question
Wien the Sun, the earth and the moon are in line during their movement, with the earth being the opaque object and casting its shadow on the moon, we have
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Question 75 of 110
75. Question
Which of the following instruments could be used in finding angle of elevation of the sun?
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Question 76 of 110
76. Question
Which of the following optical instruments does not depend on the use of elevation of the sun?
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Question 77 of 110
77. Question
Which of the following statements supports the assumption that light travels in straight lines?
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Question 78 of 110
78. Question
Which of the following is correct about nuclear fission? It is:
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Question 79 of 110
79. Question
A light energy E falls on a metal and the electrons with a maximum kinetic energy of 0.2eV are ejected. If the work function of the metal is 0.3eV, what is the value of E?
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Question 80 of 110
80. Question
A nucleus is unstable if
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Question 81 of 110
81. Question
A radioactive substance has a half-life of 4 years. If its activity toady is 20 dps, its activity 18 years from today is
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Question 82 of 110
82. Question
A substance has a half-life of 3 min. After 6min, the count rate was observed t be 400. What was its count rate at zero time?
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Question 83 of 110
83. Question
An element and its isotopes differ only in the number of
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Question 84 of 110
84. Question
Complete the following sentence: When electrons from a heated filament accelerate through vacuum towards a positive plate,
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Question 85 of 110
85. Question
Radioactive elements are
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Question 86 of 110
86. Question
The following radiations are electrically neutral except
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Question 87 of 110
87. Question
Upon which one of the following parameters does the energy of a photon depend?
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Question 88 of 110
88. Question
Which of the following is NOT tree about cathode ray?
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Question 89 of 110
89. Question
Who proposed the planetary model of the nucleus?
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Question 90 of 110
90. Question
X-rays cannot be used
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Question 91 of 110
91. Question
1 farad is equivalent to:
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Question 92 of 110
92. Question
A 0-10mA galvanometer with a coil resistance of 30ohm can be converted to a 0-10 A ammeter by using
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Question 93 of 110
93. Question
A battery has an internal resistance of 4 and an emf of 12V. The tenninal voltage when a loadof20Ω is connected across it is:
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Question 94 of 110
94. Question
A conducting sphere has a net charge of-4.8 x 10-17C. What is the approximate number of excess electrons on the sphere if the fundamental natural charge is -1.6 x 10-19C?
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Question 95 of 110
95. Question
A magnet cannot be demagnetized by
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Question 96 of 110
96. Question
An A.C voltage is connected to an RLC series circuit of resistance 5Ω inductance 3mH and a capacitance of 0.05µF Calculate the resonance frequency.
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Question 97 of 110
97. Question
An electric heater converts lkJ of electrical H energy to heat energy every 2 second with FI 100% efficiency. The produced is
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Question 98 of 110
98. Question
Complete the following statement: the electromotive force is
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Question 99 of 110
99. Question
If a charged body is moving in a circle on a H horizontal plane, what is the general direction of the resulting magnetic field?
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Question 100 of 110
100. Question
If a resistor is halved in magnitude and the potential across it is tripled, then the ratio of the old current to the new current is
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Question 101 of 110
101. Question
The angle between the earth’s magnetic field and the horizontal is called angle of
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Question 102 of 110
102. Question
The basic difference between the galvanometer and the electric motor is
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Question 103 of 110
103. Question
The electromotive force is in such a direction as to oppose the motion or charge producing it. This is a statement of
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Question 104 of 110
104. Question
The potential difference across the ends of a wire is doubled in magnitude. If Ohm’s law is obeyed, one of the following statements concerning the resistance of the wire is true?
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Question 105 of 110
105. Question
The process of adding impurity to a semiconductor to increase its conductivity is called
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Question 106 of 110
106. Question
Which of the following combinations consists of intrinsic properties of materials
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Question 107 of 110
107. Question
Which of the following can be measured with a potentiometer:
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Question 108 of 110
108. Question
Which of the following devices is odd in the list?
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Question 109 of 110
109. Question
Which of the following is an essential physical property of the wires used for making fuses?
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Question 110 of 110
110. Question
Which one of the following statements concerning the magnetic force on a charged particle in a magnetic field is true?
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