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If an interference pattern have maximum ...

If an interference pattern have maximum and minimum intensities in `36:1` ratio, then what will be the ratio of amplitudes?

A

5:7

B

7:4

C

4:7

D

7:5

Text Solution

Verified by Experts

The correct Answer is:
D
`(I_("max"))/(I_("min"))= ((A_(1)+ A_(2))^(2))/((A_(1)- A_(2))^(2)) implies (A_(1)+ A_(2))/((A_(1)- A_(2))) =6 implies (A_(1))/(A_(2))+ 1= 6(A_(1))/(A_(2))- 6 implies (A_(1))/(A_(2))= (7)/(5)`
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