Question 33
Light and ReflectionWhen the sun, the moon and the earth are as shown in the diagram above, an observer standing at 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
Show the answer and explanation
Answer: A (penumbra and sees a partial eclipse)
Explanation
X is in the partly shaded region (penumbra), where the moon hides only part of the sun, so the observer sees a partial eclipse.