Which of the below is a phenomenon of total solar eclipse?

I. Total internal reflection of light.
II. Conservation of light energy.
III. Relative motion of the earth, sun and moon.
IV. Rectilinear propagation of light.

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

Correct Answer:

Option D = III and IV only

Explanation

Due to rectilinear propagation of light, we have eclipse which occur as a result of relative motion of the earth, sun and moon