Question 30
Light and ReflectionI. Total internal reflection of light
II. Conservation of light energy
III. Relative motion of the earth, sun and moon
IV. Rectilinear propagation 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
Show the answer and explanation
Answer: D (III and IV only)
Explanation
A solar eclipse happens when the moon moves between the sun and earth (relative motion) and casts a shadow because light travels in straight lines.