Assertion: A hollow lens behaves like a thin glass plate.
Reason: Power of this lens becomes zero.

Options

A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If Assertion is false but Reason is true.

Answer

A

Explanation

(a) As, `1/(f_(1))=(mu-1)(1/R-1/R)=0`
`therefore P_(1)=0`
`1/(f_(2))=(mu-1)(1/(-R)-1/((-R)))`=0
`thereforeP_(2)=0`