Question

Two coherent sources produce waves of different intensities which interfere. After interference, the ratio of the maximum intensity to the minimum intensity is 16. The intensity of the waves are in the ratio:
(A) 16 : 9 (B) 25 : 9
(C) 4 : 1 (D) 5 : 3
[JEE Main 2019]

Answer 1

Answer:

option A

Explanation:

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Answer 2

Answer:

25/9

Explanation:

(rootI1+rootI2)^2/(rootI1-rootI2)^2=16

take square root both side and then by compondendo dividendo rule

rootI1/rootI2=5/3

so I1/I2=25/9