1995 WAEC SSCE Physics Past Questions

1995

When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that in Q. lf the masses of P and Q are the same, calculate the ratio of the specific heat capacit…

1995

How much heat is required to convert 20 g of ice at 0oC to water at the same temperature? (Specific latent heat of ice = 336 J g-1)

1995

An iron rod of mass 2kg and at a temperature of 280oC is dropped into some quantity of water initially at a temperature of 30oC. lf the temperature of the mixture is 70oC, calculate the mass of the water. (Neglect heat l…

1995

The temperature of glass vessel containing 100cm3 of mercury is raised from 10oC to 100oC. Calculate the apparent cubic expansion of the mercury. (Real cubic expansivity of mercury = 1.82 x 10-4K-1) (Cubic expansivity of…

1995

An object is placed on the principal axis at the centre of curvature of a concave mirror. The image of the object formed by the mirror is

1995

Which of the following is not self-luminous?

1995

Light travels in straight lines. In which of the following is this principle manifested? I. Pinhole camera II Formation of shadows III. Diffraction of light IV. Occurrence of eclipse

1995

A ray of light is incident on a body x as shown in the diagram above. What is the refractive index of the body?

1995

A sound note of frequency 250 Hz and wavelength 1.3m is produced at a point near a hill. If the echo of the sound is received 1 second later at the point, how far away is the hill from the point?

1995

Which of the following wave characteristics can be used to distinguish a transverse wave from a longitudinal wave?

1995

Sixty complete waves pass a particular point in 4s. lf the distance between three successive troughs of the waves is 15m, calculate the speed of the waves,

1995

A wire is stretched between two points, 1m apart. If the speed of the wave generated on plucking the wire is 200ms-1, what is the minimum frequency which will resonate with the wire?

1995

What is the escape velocity of a body on the surface of the earth of radius R if the gravitational constant is G and the mass of the earth is M? (Neglect energy losses to the surroundings)

1995

A listener can detect the instrument from which a note is being sounded because different instruments produce the same note with a different.

1995

An alternating voltage with a frequency of 50Hz has a period of

1995

The period of a wave is 0.02 second. Calculate its wavelength if its speed is 330 ms-1

1995

If the current in the resistor R in diagram above is 0.05A, calculate the p.d. across the inductor.

1995

Calculate the inductive reactance of the circuit shown above.

1995

Calculate the electric potential at a distance of 20.0cm from a point charge of 0.015C placed in air of permittivity (Take 1/4πεo as 9.0 x 109 Nm2C2)

1995

A balloon containing 546cm3 of air is heated from 0oC to 10oC. If the pressure is kept constant, what will be its volume at 10oC?

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