2002 WAEC SSCE Physics Past Questions

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2002

The size of the hole of a pin hole camera is increased. The resultant image formed becomes

2002

A radio wave has a wavelength of 150m. If the velocity of radio waves is free spaces is 3 x 108ms-1, calculate the frequency of the radio wave

2002

A slinky spring fixed at one end is placed horizontally on a table. The free end is displaced parallel to the table and then released. The resultimg wavelength is

2002

When two notes of nearly equal frequencies are sounded together, a periodic rise and fall in sound intensity can be heard. This phenomenon can be called

2002

A pulse of a sound is transmitted from a ship and the reflection from the sea bed is recorded after 0.2s. Calculate the depth of the sea. [Take speed of sound in sea water = 1560ms-1]

2002

In a compound microscope, the image formed by the objective lens is at a distance of 3.0cm from the eye lens. Calculate the focal length of the eye lens

2002

A converging lens of focal length 15cm forms a virtual image at a point 10cm from the lens. Calculate the distance of the object from the lens

2002

The refractive index of a medium relative to air is 1.8. Calculate to the nearest degree, the critical angle for the medium

2002

Two spheres of masses 100kg and 90kg respectively have their centres separated by a distance of 1.0m. Calculate the magnitude of the force of attraction between them. [G = 6.70 x 10-11Nm-2kg-2]

2002

Which of the following items can be used to compare the relative magnitudes of electric charges on two bodies?

2002

Which of the following actions will not cause an increase in the frequency of a vibrating string?

2002

Which of the following instruments is not a wind instrument?

2002

A transformer has 400 turns and 200 turns in the primary and secondary windings respectively. If the current in the primary and secondary windings are 3A and 5A respectively. calculate the efficiency of the transformer?

2002

Which of the following actions will not lead to an increase in the induced e.m.f. in a coil of wire rotating between the poles of a magnet? Increasing the

2002

The lead-acid accumulator consists of a

2002

The magnitude of the gravitational attraction between the earth and a particle is 40N. If the mass of the particle is 4kg. Calculate the magnitude of the gravitational field intensity of the earth on the particle

2002

Which of the following is usually used to cause fission in an atomic reactor?

2002

If a radioactive atom emits a beta particle, Its mass number

2002

In a model of the hydrogen atom, the energy levels Wn are given by the formula Wn = -\(\frac{R}{n^2}\), where n is an integer and R is a constant. Determine the energy released in the transition from n = 3 to n = 2.

2002

A freely-suspended magnet swinging in a horizontal plane comes to rest with its axis pointing approximately

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