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A ray of light of intensity I is inciden...

A ray of light of intensity I is incident on a parallel glass-slab at the point A and it undergoes partial reflection and refraction as shown in the figure. At each reflection 25% of the incident energy is reflected and the rest is transmitted. If the rays AB and A'B' undergo interference, then the ratio `(I_("max"))/(I_("min"))` is

A

`4:1`

B

`8:1`

C

`7:1`

D

`49:1`

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The correct Answer is:
D
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