CBSE Class 12-science Answered
Question no. 1 (b)
Asked by ritikabehera01 | 25 Feb, 2019, 12:12: PM
Expert Answer
In single slit experiment, maxima ocuurs when angle θ = [ n+(1/2) ] λ/a
miinima occurs when angle θ = n λ/a
where a is slit width and λ is the wavelength of light used. n = ±1, ±2, ± 3 etc
first order maxima occurs when n = 1, hence θ1 = (3/2) λ/a = (3/2)×600×10-9 / 10-3 = 0.9 milli rad
Third order minima occurs whne n = 3, hence θ3 = 3 λ/a = 3×600×10-9 /10-3 = 1.8 milli rad
hence angular separation = 0.9 milli rad
Answered by Thiyagarajan K | 25 Feb, 2019, 03:08: PM
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