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 is 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 fasle, 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_(w) = ((mu_(g))/(mu_(w)) - 1)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.