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AIIMS2011PhysicsRay Optics

Assertion: When white light fall on the compact disc, multicolours are seen after reflection. Reason: CD disc behaves like a prism.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion.

Step-by-step solution

The CD acts like a prism because the narrow grooves are so close to each other that you cannot see the separation. But, white light fall on the CD will be separated by multicolours by grooves.

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