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Please help........ How to proceed..................

Please help........
 
How to proceed..................

Question Image
Grade:12

1 Answers

Arun
25763 Points
one year ago
Dear student
 
As we learnt in
 
Fraunhofer Diffraction -
 
b\sin \theta = n\lambda
 
- wherein
 
Condition of nth minima.
 
b= slit width
 
\theta = angle of deviation
 
dsin\theta=\lambda\ \; \Rightarrow\ \;sin\theta=\frac{\lambda}{d}
 
\lambda
 
\frac{h}{[P_{y}]}
 
\therefore\ \; h
 
|P_{y}|d
 
Correct option is 3.

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