1996 WAEC SSCE Physics Past Questions

1996

When a ray of light is incident normally on an air- glass interface, its angle of refraction is

1996

The graph above shows the relationship between sin i and sin r for a ray of light in air incident on a liquid surface. If i and r are respectively angles of incidence and refraction, deduce the refractive index of the li…

1996

A boy walks away from a plane mirror at a speed of 3 ms-1 in a direction normal to the surface of the mirror.

1996

A ray of light strikes a plane mirror at a glancing angle of 50o. Calculate the angle between the incident and reflected rays

1996

In which of the following media would sound waves travel fastest?

1996

Which of the following instruments produces sound by the vibration of air column?

1996

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

1996

When a ray of light is incident normally on an air- glass interface, its angle of refraction is

1996

A ray of light is incident on a glass block as shown in the diagram above. If the reflected and the retracted rays are perpendicular to each other, what is the refractive index of the glass relative to air.?

1996

The speed of sound in air is 330ms-1. How far from the centre of a storm is an observer who hears a thunder clap 2s after the lightning flash? (Neglect the time taken by light to travel to the observer)

1996

A sound wave of velocity 350 ms-1 is directed towards the surface of water. lf the ratio of the wavelength of sound in water to that in air is 425:100, calculate the velocity on the wave in water

1996

A string of length 1.0 m vibrates in 10 loops. If the total mass of the string is 1.0 x 10-3 kg and the tension in it is 10N, calculate the frequency of the vibration.

1996

The walls and ceilings of many standard auditoria are covered with perforated pads to

1996

Which of the following is not a component of a d.c. electric motor?

1996

The main function of the mouth of a telephone is to convert sound energy into

1996

CalcuIate the power delivered by a 3-phase line if its voltage and current at 132KV and 60A respectively.

1996

The diagram above represents a stationary wave set up in a string which is fixed at both ends. lf the frequency of the wave is 256Hz and the distance N1 N2 equals 1.5m, calculate the speed of the wave.

1996

The diagram above illustrates a variation of the displacement y of a wave particle with time t. lf the velocity of wave is 250ms-1, calculate the distance between two successive particles which are in phase

1996

Soft iron is used in making the armature of an electric bell because it

1996

A cell of e.m.f. 1.5V is connected in series with a resistor of resistance 39. A high-resistance voltmeter connected across the cell registers only 0.9V. Calculate the internal resistance of the cell

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