In a diffraction pattern due to a single slit of width 
, the first minimum is observed at an angle 
when light of wavelength 
is incident on the slit. The first secondary maximum is observed at an angle of
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
For first minimum, the path difference between extreme waves, 
Here 
…… (i)
For first secondary maximum, the path difference between extreme waves
or (2 
) 
[Using eqn (i)]
or 
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