(A) : A beam of white light gives a spectrum on passing through a hollow prism.
(R) : The speed of light inside the hollow prism is more than that of incident.

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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

'A' is true and 'R' is false

Both 'A' and ‘R’ are false

answer is D.

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Detailed Solution

Since the prism is hollow there is no change of medium when the ray enters the prism, hence no dispersion or spectrum is observed . The speed of light increases or decreases depends on the medium in which the prism is placed .

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