Assertion -Critical angle of light passing from glass to air is minimum 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 AssertionBoth Assertion and Reason are correct but Reason is not the correct explanation AssertionAssertion is correct but Reason is incorrectBoth Assertion and Reason are incorrect

Question

Toppr Admin · Accepted Answer

The critical angle for a monochromatic ray of light is given as
$θ_{c} = t a n^{- 1} (\frac{1}{μ})$
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.

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.