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
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