Optics Question 1086

Question: In Young’s double slit experiment, if the widths of the slits are in the ratio 4 : 9, the ratio of the intensity at maxima to the intensity at minima will be

[Manipal MEE 1995]

Options:

A) 169 : 25

B) 81 : 16

C) 25 : 1

D) 9 : 4

Show Answer

Answer:

Correct Answer: C

Solution:

Slit width ratio =4:9; hence I1:I2=4:9

a12a22=49a1a2=23

ImaxImin=(a1+a2)2(a1a2)2=251



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