Statement-1 : When a prism of `mu = 3//2` is immersed in water `(mu = 4//3)`, deviation through the prism becomes `1//4th` of the deviation, when the prism is in air.
Statement-2 : It follows from `delta = (mu - 1)A`

Options

A. Statement - 1 true, Statement - 2 is true. Statement - 2 is correct explanation of statement - 1.
B. Statement - 1 is true, Statement - 2 is true, but Statement - 2 is not a correct explanation of Statement - 1.
C. Statement - 1 is true, Statement - 2 is false.
D. Statement - 1 is false, Statement - 2 is true.

Answer

A

Explanation

When prism is in air,
`delta_a = (mu -1) A = (3//2 - 1) A = A//2`
When prism is in water,
`delta_m = ((mu_g)/(mu_w) - ) A = ((3//2)/(4//3) - 1) A = (A)/(8) = (delta_a)/(4)`
Both the statement are true and statement-2 is correct explanation of statement-1.