WAEC SSCE - Physics - 1990 (Objective)
Question 1 Report
The body P shown in the diagram above is in equilibrium. If the mass Q of the body is 10kg, calculate the tension T in the string. (Take g = 10ms2)
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An object R leaves a platform XY with a horizontal velocity of 7m-1 and lands at Q. lf it takes the same object 0.3s to fall freely from Y to P, calculate the distance PQ.(Take g = 1Oms2)
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Question 13 Report
The diagram above represents part of a wave motion in air. If the wave travels with a speed of 300ms-1calculate the frequency of the wave.
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Question 18 Report
The eye defect illustrated by the diagram above is
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The diagram above shows an incident ray A, inclined at angle of 50o to the interface CB. The ray OB is found to lie along the surface. What is the refractive index of the medium X with respect to air?
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Question 22 Report
The diagram above shows an incident ray A, inclined at angle of 50o to the interface CB. The ray OB is found to lie along the surface. What is the refractive index of the medium X with respect to air?
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Question 25 Report
The diagram above represents a portion of a micrometer screw 20 gauge. What is its reading?
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Question 28 Report
If the frequency of the ac. circuit illustrated above is 500/? Hz what would be the reactance in the circuit?
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Question 29 Report
What is the value of R when G shows no deflection in the circuit illustrated above?
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Question 31 Report
Which of the following is/are necessary for the production of interference with two wave trains? I. The sources must be close to each other. II The waves must have the same frequency. III. The waves must have the same amplitude. IV. The waves must travel with the speed of light.
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Question 38 Report
Where will the image of the object OB shown in the diagram above be located after reflection from the mirror?
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Question 40 Report
The eye defect illustrated by the diagram above is
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Question 48 Report
Calculate the current in the 3? resistor shown in
the diagram above.
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Question 53 Report
A force F is applied to a body P as shown in the diagram above. If the body P moves through a distance r, which of the following represents the work done?
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Question 58 Report
An oscillating pendulum has a velocity of 2ms-1 at the equilibrium position O and velocity at same point P. Using the diagram above, calculate the height of P above O. (Take g = 10ms2)
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Question 61 Report
Two forces each of 4 N act on the opposite sides of a rectangular plate as shown in the diagram above. Calculate the magnitude of g the couple acting on the plate.
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