Two coherent sources 
and 
produce interference at point 
on the screen where there is a dark band which is formed between 
bright band and 
bright band. Wavelength of light used is 
. The path difference between 
and 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: For 
dark band, path difference i.e.,
Here, 
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