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A slit 5 cm wide when irradiated by waves of wavelength 10 mm results in the angular spread of the central maxima on either side of incident light by about |
1/2 radian 1/4 radian 3 radian 1/5 radian |
1/5 radian |
Angular spread on either side is given by $θ=\frac{λ}{a}=\frac{1}{5}$ radians |
