In Young's double-slit experiment, the ratio of intensities of a bright band and a dark band is 16 : 1 . The ratio of amplitudes of interfering waves will be

Question

In Young's double-slit experiment, the ratio of intensities of a bright band and a dark band is 16 : 1 . The ratio of amplitudes of interfering waves will be, 16 : 1, 4 : 1, 3 : 1, 5 : 3

MARKS App · Accepted Answer

Since I m a x . I m i n . = 16 1 ( I 1 + I 2 ) 2 ( I 1 − I 2 ) 2 = 16 1 I 1 + I 2 = 4 I 1 − 4 I 2 A 1 + A 2 = 4 A 1 − 4 A 2 3 A 1 = 5 A 2 ⇒ A 1 A 2 = 5 3

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