NEET Class neet Answered
Q no 10
Ans 1
Asked by manasvijha | 09 Apr, 2019, 09:49: PM
Expert Answer
if nth minimum occurs at a distance y from central maximum, we have, y = nλD/a .............(1)
where D = distance between slit and screen = 1 m
and a = slit width = 0.3 mm
hence we sunstitute values in eqn.(1), we have 5×10-3 = 3×λ×1/ ( 0.3×10-3) or λ = 5000 A°
Answered by Thiyagarajan K | 09 Apr, 2019, 11:08: PM
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