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With respect to air,critical angle in a ...

With respect to air,critical angle in a medium for light of red colour `[gamma_1]` is `theta`. Other facts remaining same, critical angle for light of yellow colour`[gamma_2]` will be

A

`theta`

B

more than `theta`

C

`less than theta`

D

`frac(thetalambda_1)(lambda_2)`

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