Question

Read the assertion and reason carefully to mark the correct option out of the options given below.

Assertion: When a tiny circular obstacle is placed in the path of light from some distance, a bright spot is seen at the center of shadow of the obstacle.

Reason: Destructive interference occurs at the center of the shadow.

• A. Both assertion and reason are true, and the reason is the correct explanation of the assertion.
• B. Both assertion and reason are true, but reason is not the correct explanation of the assertion.
• C. Assertion is true, but reason is false.
• D. Assertion and reason both are false.

Answer 1

The correct option is C Assertion is true, but reason is false.

The waves diffracted from the edges of circular obstacle, placed in the path of light, interfere constructively at the center of the shadow resulting in the formation of a bright spot.

Hence, $\left(C\right)$ is the correct answer.