Assertion: For a given medium polarizing angle is `60^@`. The critical angle for this medium is `35^@`
Reason: `mu=tani_p`.

Options

A. (a) If both assertion and reason are true and reason is the correct explanation of assertion.
B. (b) If both assertion and reason are true but reason is not the correct explanation of assertion.
C. (c) If assertion is true but reason is false.
D. (d) If assertion and reason both are false.

Answer

B

Explanation

From the relation,
`mu=tan i_p=tan60^@=sqrt3`
and also `mu=(1)/(sinC)`
`Sin C=1/mu=1/sqrt3` from Eq. (1)
`:. C=sin^-1(1/sqrt3)=sin^-1(0.577)`
`=35.23^@~=35^@`