In a single slit diffraction experiment, first minimum for red light (660 nm) coincides with first maximum of some other wavelength 
. The value of 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Given, first maximum for red light is 660 nm
In a single slit diffraction experiment, position of minima is given by 
.
So, for first minima of red light, 
and as first maxima is mid-way between first and second minima, for wavelength 
, its position will be
According to given condition, 
So, 
Hence, value of 
is 
.
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