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…
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1995 WAEC SSCE Physics Past Questions
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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)
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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…
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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…
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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
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1995
Which of the following is not self-luminous?
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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
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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?
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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?
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1995
Which of the following wave characteristics can be used to distinguish a transverse wave from a longitudinal wave?
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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,
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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?
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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)
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1995
A listener can detect the instrument from which a note is being sounded because different instruments produce the same note with a different.
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1995
An alternating voltage with a frequency of 50Hz has a period of
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1995
The period of a wave is 0.02 second. Calculate its wavelength if its speed is 330 ms-1
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1995
If the current in the resistor R in diagram above is 0.05A, calculate the p.d. across the inductor.
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1995
Calculate the inductive reactance of the circuit shown above.
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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)
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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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