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Q.

If we observe the single slit Fraunhofer diffraction with wavelength λ and slit width d, the width of the central maxima is 2θ. On decreasing the slit width for the same

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a

θ increases

b

θ remains unchanged

c

θ decreases

d

θ increases or decreases depending on the intensity of light

answer is A.

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Detailed Solution

2θ=2λd (where d= slit width) As d decreases, θ increases.
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