Assertion :Critical angle of light passing from glass to air is minimum for violet colour. Reason: The wavelength of violet light is greater than the light of other colours.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
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Solution
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The critical angle for a monochromatic ray of light is given as θc=tan−1(1μ)
Since μ is maximum for violet light, the critical angle is minimum for the same. Hence assertion is correct.
Also, the wavelength of violet is lesser than the light of other colors.
Hence reason is incorrect.
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