Assertion (A) : The flim which appears bright in reflected system will appear dark in the transmitted system and vice-versa.
Reason (R ) : The conditions for film to appear bright of dark in the reflected light are just revese to those in the transmitted light

Options

A. (A) is true and (R) is true and (R) is the correct explanation of (A).
B. (A) and (R) are true but (R) is not the correct explanation of (A)
C. (A) is true, (R) is false
D. (A) is false, (R) is true

Answer

A

Explanation

For a reflected system of the film,the condition for maxima is
`2mutcosr=(2n-1)(lamda)/(2)`. While the maxima for a transmitted system of film is `2mutcosr=nlamda` and is reverse for minima. A &R are true andR is the correct explanation of A.