Physics
Assertion (A): A beam of white light gives a spectrum on passing through a hollow prism.
Reason (R): The speed of light outside the prism is same as the speed of light inside the prism.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- assertion is false but reason is true.
- assertion is true but reason is false.
Spectrum
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Answer
assertion is false but reason is true.
Explanation
Assertion (A) is false. A hollow prism contains air inside, so there is no change of medium when light passes through it. Hence, no dispersion occurs and no spectrum is formed.
Reason (R) is true. Assuming hollow prism mentioned in assertion, the medium inside and outside is air, so speed remains the same.
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