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A ray of light intensity I is incident o...

A ray of light intensity I is incident on a parallel glass-slab at a point `A` as shown in figure. It undergoes partial reflection and refraction. At each reflection `25%` of incident energy is reflected. The rays `AB` and `A^(')B^(')` undergo interference. 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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ERRORLESS -WAVE OPTICS-SET
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