In Young?s double slit experiment the amplitudes of two sources are 3a – McqOptions

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1.	In Young?s double slit experiment the amplitudes of two sources are 3a and a respectively. The ratio of intensities of bright and dark fringes will be [J & K CET 2004]
A.	3 : 1
B.	4 : 1
C.	2 : 1
D.	9 : 1
Answer» C. 2 : 1

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