A slit of width 
is illuminated by red light of wavelength 
. If the first diffraction minimum falls at 
, then the value of 
is
A
B
1.3 micron
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: Given, slit width 
Wavelength, 
First minimum, 
For first diffraction minima,
micron
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