1992 WAEC SSCE Physics Past Questions

1992

Which of the following statements is not correct?

1992

Which of the following best explains a person suffers more severe burns when his skin is exposed to steam than when boiling water is poured onto his skin?

1992

The change of the direction of a wave-front because of a change in the velocity of the wave in another medium is called

1992

A body accelerates uniformly from rest at the rate of 3 ms-1 for 8 seconds. Calculate the distance covered by the body during the acceleration.

1992

Which of the following statements about solid friction is/are correct? I. Friction depends on the nature of the surfaces in contact II. Friction depends on the area of contact III. Friction always acts in the direction o…

1992

What change in velocity would be produced on a body of mass 4kg if a constant force of 16 N acts on it for2 s?

1992

The diagram above represents the trajectory of a projectile with an initial velocity U. Calculate the time taken to reach the maximum height. (Take g as acceleration due to gravity)

1992

Which of the following is a scalar quantity?

1992

A barometer can be used in determining the I. height of a mountain II. depth of a mine III. dew point. Which of the following is/are correct?

1992

A force of 20 N applied parallel to the surface of a horizontal table, is just sufficient to make a block of mass 4kg move on the table. Calculate the coefficient of friction between the block and the table. (g = 10ms2)

1992

Solid weighs 0.040 N in air and 0.024 N when fully immersed in a liquid of density 800 kg m-3. What is the volume of the solid? (g = 1Oms2)

1992

Which of the following has the same unit as the moment of a force?

1992

Which of the following colours of surfaces will radiate heat energy best?

1992

A given mass of gas at a temperature of 30°C is trapped in a tube of volume V. Calculate the temperature of the gas when the volume is reduced to two-third of its original value by applying a pressure twice the original…

1992

Which of the following statements is/are correct? I. Pure water freezes at 0oC under normal pressure ll. Water has its highest density at 4oC. III. The volume at 4oC,

1992

Steel bars, each of length 3.0 m at 28°C, are to be used for constructing a rail line. If the linear expansivity of steel is 1.0 x 10-5°C, what is the safety gap that must be left between successive bars if the highest t…

1992

A body of mass 5kg falls from a height of 10m above the ground. What is the kinetic energy of the body just before it strikes the ground? (Neglect energy losses and take gas 10ms2)

1992

A metal of mass 1.5 kg was heated from 27oC to 47oC in 4 minutes by a boiling ring of 75 W rating. Calculate the specific heat capacity of the metal, (Neglect heat losses to the surrounding)

1992

A small circular membrane is 10cm below the surface of a pool of mercury when the barometric height is 76 cm of mercury. If the density of mercury is 13600kg-3, what is the pressure on the membrane in Nm-2? (g =10m2)

1992

A gas which obeys Charles’ law exactly has a volume of 283cm3 at 10oC. What is its volume at 30oC?

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