A narrow monochromatic beam of light of intensity 1 is incident on a glass plate as shown in figure Another identical glass plate is kept close to the first one and parallel to it. Each glass plate reflects `25%` of the light incident on it and transmits intensities in the interference pattern formed by two beams obtained after one reflection at each plate.

Answer

A, D

Explanation

As shown in the figure, the interference will be between `0.25 I=I_(1)` and ``0.14I=I_(2)`
`(I_(max))/(I_(min))=((sqrtI_(1)+sqrtI_(2)))/((sqrtI_(1)-sqrtI_(2))^(2))`
`([sqrt0.25I+sqrt(0.14I]]^(2))/([sqrt0.25I-sqrt0.14I]^(2))=(49)/(1)`.