2011 Physics NECO Objective Questions

The bearings of A and B from O, in the diagram above are

Which of the following is not a type of motion?

Which of the following is not an example of circular motion? The motion of

Instantaneous velocity is the velocity at any instant in

A body moving with uniform acceleration a is represented by points (10, 30) and (25, 65) on a velocity-time graph. Calculate the magnitude of a

The following sets consist of vector quantities only except

Two uniform velocities are represented by If the angle between them is α, where 0⁰ ≤ α 90°, the magnitude of their resultant is

A ball is thrown with an initial velocity u at an angle of 60O to the horizontal, if the time taken to reach the plane of projection is 8.66s and the horizontal range of the ball is S, determine the values of u and S. [g = 10ms-2]

Mechanical equilibrium can either be

Which of the following is an example of neutral equilibrium? A/An

A body of mass 40g is suspended from the end of a spiral spring whose force constant is 0.8Nm-1. If it executes simple harmonic motion and has an

The wave diagram above represents

A load is pulled 5m along a horizontal floor by a constant force of 20N which acts at 30^O to the floor. Calculate the work done by the force.

A body of mass5kg falls from a height of 10m above the ground. What is the kinetic energy of the body just before it hits the ground?

[g=10ms^-2]

Which of the following pairs consists of second class levers only?

A ball of mass 0.4kg moving with a speed of 5ms-1 collides with another ball of equal mass at rest. If the two balls stick together and move with a common speed V, calculate V.

A stone weighing 500g is pushed along a tarmac by a horizontal force of 10N. If a force of 4N opposes its motion, calculate the magnitude of the acceleration of the stone

Which of the energy sources listed below are renewable?

I        Fission

II       Solar

III      Tides

IV      Petroleum

What amount of heat is given off when a piece of iron of mass 40g cools from 40°C to 10°C?

[specific heat capacity of iron = 460Jkg-1K-1]

The quantity of heat required to change the temperature of a unit mass of a substance by 1°C is called

The pressure of a as at constant volume is 90cmHg at 30°C. Calculate its pressure at 60°C.

How much heat is required to change 6 kg of ice at 0°C to water at the same temperature?

[specific latent heat of fusion of ice = 3.36 × 10⁵Jkg^-1].

The phenomenon whereby a liquid turns into vapour irrespective of the prevailing pressure and temperature is known as

Which of the following statements is not correct about evaporation? It

A stone is thrown into a pool of water. Which of these statements is not correct about the process? The

Two identical waves A and B, traveling in the same direction arrive at a point. If they are superimposed, what will be their resultant effect?

In a periscope, a horizontal ray of light is incident at an angle of 45° to the first mirror M1 and is reflected on the second mirror M2. What angle will this reflected ray make with the normal to M2?

An object is placed 15cm in front of a concave mirror. If the radius of curvature of the  mirror is 10cm, calculate the image distance.

An object placed 18cm from a converging lens of focal length 12cm forms a real image of height 6cm.

What is the height of the object’?

When white light passes through a prism, an elongated colored patch of light is obtained on a screen placed behind the prism. If the order of the band is taken from the least deviated to the most deviated, which is the third color on the band?

Which of the following is correct about electromagnetic waves? They

Which of the following applies in a camera but not in a human eye?

An aeroplane flies over a house and the objects within the house are set into vibration. This phenomenon is known as

The wave representation of a vibrating string is as shown above. If the wave has a velocity V, the frequency is expressed as

What is the length of a closed pipe that will produce a sound of a fundamental frequency of 150Hz?

[Speed of sound in air 330ms]

Which of these is not an application of echoes?

The force field(s) experienced around a solenoid and a point charge is/are
I. Magnetic
II. Electrical
III. Gravitational
Which of the statement(s) above is/are correct?

The force of attraction between the sun and the earth is 3.84 x 10²N and their distance apart is 1.4 x 10¹²m. If the mass of the sun is 1.89 x 10³⁰ kg, determine the mass of the earth.

[G = 6.67 x 10^-11].

Which of the following diagrams represent the direction of lines of force between two unlike charges?

What is the electric field intensity in the air at a distance of 47cm from a charge of 6 x 10^-7C, if the force on the charge is 3 x 10^-4 N?

Two capacitors of capacitances 4µF and 5µF are connected in parallel and then connected in series to a capacitor of capacitance 6µF. If the resulting combination is connected across 300V, calculate the total charge.

A continuous flow of charge can be produced from the following except from a/an

A lamp takes a current of 17A from a 220V mains. The energy produced in 15min is

The resistance of a wire, 30cm long is 1.5Ω. If it has a cross sectional area of 0.25m², calculate the resistivity of the material

Electrolysis is not applied in

Which of the following pairs of materials are not ferromagnetic substances?Cobalt and manganese

An electron is projected into a magnetic field of flux density 15T at an angle of 60° to the field. If it moves with a velocity of 4.5 x 105ms-1, calculate magnitude of the magnetic force it experienced.

[e = 1.6 x 10-19C]

Power is transmitted in high tension to avoid

A current of 2A passes through a coil such that the magnetic flux set up is 12Wb after a time t. Calculate the self-inductance in the coil.

Which of the following graphs labeled A to E does not represent the variation of reactance with frequency.

The circuit diagram below shows the connection of an inductor, capacitor and resistor in series. Calculate the resonant frequency.

Which of the following statements about liquids is correct? They

A spring of length 2.0m requires a force of 6N to stretch it by 0.2cm. What work is done in stretching it by 2cm if the elastic limit is not

An example of crystal is

A cylinder has a base radius of 0.3m and height 0.2m. If it has a mass of 55kg. Calculate its density.

Calculate the pressure at a point, 3m below the surface of a pond.
[g = 10ms-2, density of water = 103kgm-3]

Which of the following constituents of an atom moves round the nucleus?

Calculate the wavelength of the radiation emitted when an electron falls from an energy level of 0.43eV to – 13.6eV. [1eV = 1.60 x 10-19J, c = 3 x 108ms-1, h = 6.63 x 10-34Js].

A nucleus has a proton number of 74. If it emits an α – particle and then a β – particle to achieve stability, what is the proton number of the product?

Which of the following quantities cannot be measured simultaneously?
I. distance and momentum
II. energy and time
III. distance and energy