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Grade 12Wave Optics

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

Question image for Please help........ How to proceed...............
Profile image of muskan
6 Years agoGrade 12
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1 Answer

Profile image of Arun
6 Years 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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