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CBSE Class 12-science Answered

Answer 3rd numerical
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Asked by lovemaan5500 | 06 Dec, 2019, 09:09: PM
answered-by-expert Expert Answer
If a is width of single slit, θ is angular position of first minimum from central maximum, then we have
 
aθ = λ  .....................(1)
 
Hence , angular separation θ  = λ/a = 600 × 10-9 /  (0.3 × 10-3 ) = 2 ×10-3 rad
 
 
Angular separation between first maximum and central maximum is given by,
 
aθ = (3/2)λ  .....................(2)
 
Hence θ = (3/2) (λ/a) = 1.5 × 600 × 10-9 / (0.3 × 10-3 ) = 3 × 10-3 rad
 
hence angular separation on between first maximum and central maximum on both sides is given by,  2θ = 6 × 10-3 rad
Answered by Thiyagarajan K | 07 Dec, 2019, 11:49: AM

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