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 [NEET 2016]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
As the first minimum is observed at an angle of 
in a diffraction pattern due to a single slit of width 
.
i.e. 
According to Bragg's law of diffraction,
(n = 1)
…… .(i)
For Ist secondary maxima,
…… (ii)
Substitute value of 
from Eq. (i) to Eq. (ii), we get
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