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Question: Answered & Verified by Expert
Assertion : When tiny circular obstacle is placed in the path of light from some distance, a bright spot is seen at the centre of the shadow of the obstacle.
Reason : Destructive interference occurs at the centre of the shadow.
PhysicsWave OpticsAIIMSAIIMS 2002
Options:
  • A If both the assertion and reason are true and reason is a correct explanation of the assertion.
  • B If both assertion and reason are true but assertion is not a correct explanation of the assertion.
  • C If the assertion is true but the reason is false.
  • D If both assertion and reason are false.
Solution:
1394 Upvotes Verified Answer
The correct answer is: If the assertion is true but the reason is false.
The waves diffracted from the edges of circular obstacle, placed in the path of light, interfere constructively at the centre of the shadow resulting in the formation of a bright spot.

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