Waec Physics 1998 Past Questions and Answers

Question 26:

• WAEC 1998

An eclipse of the sun by the moon occurs when the sun, the moon and the earth are in a straight line and the

A. Earth casts a shadow on the moon
B. Moon casts a shadow on the sun
C. Moon is between the sun and the earth
D. Earth is between the sun and the moon
E. Sun is between the moon and the earth

Question 27:

• WAEC 1998

The phenomenon which occurs when light changes direction as it passes from one medium to another is called

A. Reflection
B. Polarisation
C. Interference
D. Diffraction
E. Refraction

Question 28:

• WAEC 1998

What is the image distance of an object placed at a distance of 2f from a converging lens of focal length f?

A. F/4
B. F/2
C. F
D. 2f
E. 4f

Question 29:

• WAEC 1998

The images formed by diverging lenses are always

A. Diminished, virtual and inverted
B. Diminished, virtual and errect
C. Diminished inverted and real
D. Magnidied, virtual and errect
E. Magnified, real and inverted

Question 30:

• WAEC 1998

A converging lens of focal length 5cm is used as a magnifying glass by a man whose nearpoint is 35cm. Calculate the magnification given by the lens

A. 8
B. 7
C. 6
D. 5
E. 4