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Question 1 of 50
Which of the following statements about mass and weight are correct?
I. Weight is the force of gravity on a body.
II. The mass of a body is the quantity of matter in the body.
III. The weight of a body is greatest at the equator.
IV. The mass of a body is greatest at the poles
Question 2 of 50
Materials that can be stretched and still return to their original forms when the stresses are removed are said to be
Question 3 of 50
Which of the following units is derived?
Question 4 of 50
The barometric reading at a place is 73.5 m Hg. Calculate the pressure at a point 30 m below the surface of water contained in a reservoir at the place.
[g = ms-2 , density of mecury = 1.3 × 104 kg m-3 , density of water = 1.0 × 103 m-3 ]
Question 5 of 50
An object floats in a fluid when it displaces its
Question 6 of 50
The resultant force in a couple is
Question 7 of 50
The slope of a straight-line velocity-time graph represents
Question 8 of 50
A body is projected with an initial velocity U at an angle θ to the horizontal. The time taken by it to reach its maximum height is given by the expression
Question 9 of 50
Which of the following statements describes a body in a stable equilibrium correctly?
Question 10 of 50
In a school compound, a girl walks 40 m due east from the laboratory to the staff room to submit her report. Then she returns and walks 30 m due north to her classroom. Determine the magnitude of her displacement from the laboratory.
Question 11 of 50
Two strings each inclined at an angle 30o to the horizontal are used to hold a bucket of water weighing 20 N. Calculate the tension in each string.
Question 12 of 50
A bullet fired vertically upwards reaches a height of 500 m. Neglecting air resistance, calculate the magnitude of the initial velocity of the bullet.
[g = 10 ms-2 ]
Question 13 of 50
A uniform bar AB is balanced on a knife-edge which is 60 cm from B by a mass of 22 g which hangs at C 10 cm from A. Calculate the mass of the bar.
Question 14 of 50
A body of mass 1000 kg is released from a height of 10 m above the ground. Determine its kinetic energy just before it strikes the ground.
[g = 10 ms-2 ]
Question 15 of 50
The diagrams below illustrate four test-tubes containing the same volume of a liquid at different pressures. In which of the test-tubes does the liquid boil last if they are supplied with the same quantity of heat?
Question 16 of 50
The crackling noise produced by aluminum roofing sheets on a house during a hot sunny day is a result of
Question 17 of 50
Water is unsuitable for use as a thermometric liquid because it
Question 18 of 50
The diagram above illustrates a block and tackle pulley system in which an effort E supports a load of 100.0 N. If the efficiency of the machine is 75%, calculate the value of E
Question 19 of 50
A quantity of hot water at 100o C is added to 400 g of water at 10ºC until the temperature of the mixture is 60o C. Calculate the mass of the hot water added. [Specific heat capacity of water =4200 JKg-1 K-1 ]
Question 20 of 50
In an experiment in which a molten substance is allowed to cool, the cooling curve above was obtained. The temperature 60o C is known as the
Question 21 of 50
Which of the following concepts is a method of heat transfer that does not require a material medium?
Question 22 of 50
Which of the following units is the S.I. unit of heat capacity?
Question 23 of 50
The pressure applied to an enclosed fluid to one end is transmitted equally throughout the fluid and to the container walls. This statement is
Question 24 of 50
The diagram given illustrates a waveform. Determine the speed of the wave.
Question 25 of 50
What type of wave is emitted by a loud speaker?
Question 26 of 50
Which of the following types of lenses is suitable for correcting the eye defect illustrated by the ray diagram?
Question 27 of 50
An object is placed 15 cm from a diverging lens of focal length 12 cm. The image of the object formed by the lens is
Question 28 of 50
A swimming pool is 2.1 m deep. If it contains water of refractive index 1.3, calculate the apparent depth of pool.
Question 29 of 50
When an air column is set into vibrations, the distance between two consecutive nodes of the resultant wave is
Question 30 of 50
A girl standing some distance from the cliff claps her hands and hears the echo 0.8 s later. Calculate her distance from the cliff.
[speed of sound in air = 320 ms-1 ]
Question 31 of 50
Red light travels faster than blue light when both of them pass through a glass prism because the
Question 32 of 50
An object is placed 20 cm from a concave mirror of focal length 15 cm. Calculate the linear magnification of the image formed
Question 33 of 50
All electromagnetic waves in a vacuum have the same
Question 34 of 50
The diagram given illustrates two charged particles W and X. The charges on W and x are respectively
Question 35 of 50
An alternating current supply is connected to an electric lamp which lights with the same brightness as it does with direct current source e.m.f 6 V. The peak potential difference of the a.c supply is
Question 36 of 50
An electric generator rated 12 kW, 2 kV distributes power through a cable of resistance 20 Ω. Calculate the power loss in the cable.
Question 37 of 50
Which of the following statements is correct? When capacitors of different values are connected in series
Question 38 of 50
Which of the following statements about a three-pin plug is/are correct?
I. The brown wire is the live wire.
II. The fuse is connected to the live wire.
III. The earth wire is coloured blue.
Question 39 of 50
The symbol illustrated above is that of a resistor
Question 40 of 50
A wire of cross-sectional area 0.60 mm2 has a resistivity of 7.2 × 10-7 Ωm. Calculate the length of wire that will have a resistance of 3 Ω.
Question 41 of 50
A battery of emf 24 V is connected to three resistor P, Q and R as illustrated in the diagram. Determine the voltage across the resistor Q
Question 42 of 50
The mass of the earth is 6.0 × 1024 kg and that of the moon is 7.0 × 1022 kg. If the distance between them is 4.0 × 108 m, calculate the force of attraction between them. [G = 6.7 × 10-11 Nm2 kg-2 ]
Question 43 of 50
The angle which the direction of the earth magnetic field makes with the horizontal at a place is known as
Question 44 of 50
What must be connected between the points P and Q to establish a steady current through the incomplete circuit diagram given?
Question 45 of 50
When current flows through a moving-coil galvanometer, the force exerted on the pointer depends on the:
I. strength of the current.
II. magnetic field strength.
III. length of the coil.
Which of the statement(s) above is/are correct?
Question 46 of 50
In a nuclear fission process, the mass defect was 1.2 × 10-5 kg. Calculate the energy released.
[speed of the light in vacuum = c = 3.0 × 108 ms-1 ]
Question 47 of 50
Which of the following statements about diode is correct?
Question 48 of 50
Which of the following phenomena best support the wave nature of matter?
Question 49 of 50
Which of the following radiations constitutes a stream of electrons?
Question 50 of 50
\(\scriptsize ^{226}_{88}Ra\)emits two alpha particles to produce Polonium (Po) nuclide. The correct formula for the nuclide is
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