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Read the following statements and choose...

Read the following statements and choose the correct option.
(A) Onlly a point source forms a complete umbra.
(B) An extended source forms a complete umbra and penumbra.

A

Only A is true

B

Only B is true

C

Both A and B are true

D

Both A and B are false

Text Solution

Verified by Experts

The correct Answer is:
C
Only a point source of light forms a complete dark patch on a screen, i.e., umbra.
An extended source of light forms both umbra and penumbra.
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