Propagation of light - Jamb Physics Past Questions and Answers

Question 6:

• JAMB 1995

Total eclipse of the sun occurs when the

A. Earth is between the moon and the sun
B. Sun is between the moon and the earth
C. Moon is between the sun and the earth
D. Ozone layer is threatened

Question 7:

• JAMB 1997

When the sun, moon and the earth are as shown in the diagram above an observer standing in X is in

A. Penumbra and sees a partial eclipse
B. Penumbra and sees a total eclipse
C. Umbra and sees a partial eclipse
D. Umbra and sees a total eclipse

Question 8:

• JAMB 1999

The velocities of light in air and glass are 3.0 x 10⁸ms^-1 and 2.0 x 10⁸ms^-1 respectively. If the angle of refraction is 30°, the sine of the angle of incidence is

A. 0.33
B. 0.50
C. 0.67
D. 0.75

Question 9:

• JAMB 2008

I. Total internal reflection of light.
II. Conservation of light energy.
III. Relative motion of the earth, sun and moon.
IV. Rectilinear propation of light.
which of the above is a phenomenon of total solar eclipse?

A. I and IV only
B. II and IV only
C. I and III only
D. III and IV only

Question 10:

• JAMB 2008

An object of height 4cm is placed in front of a cuboid pinhole camera of size 6 cm. if the image formed is 2 cm high, how far is the object from the pinhole?

A. 3.0 cm
B. 8.0 cm
C. 12.0 cm
D. 16.0 cm