SATHEE: Optics Question 224

Optics Question 224

Question: Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit)

[KCET 1999]

Options:

A) $a \sin θ = \frac{λ}{2}$

B) $a \cos θ = \frac{3 λ}{2}$

C) $a \sin θ = λ$

D) $a \sin θ = \frac{3 λ}{2}$

Show Answer

Answer:

Correct Answer: D

Solution:

For nth secondary maxima path difference $d \sin θ = (2 n + 1) \frac{λ}{2}$

$\Rightarrow$ $a \sin θ = \frac{3 λ}{2}$

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Optics Question 224

Question: Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit)

Options:

Answer:

Solution:

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