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A parallel beam of wave length $λ = 500 \times 10^{- 9} m$ passes through a long slit of width $25 m m$ . The angular divergence for which most of light is diffracted is ( $10^{- 6}$ radian)

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Correct option is D

Wavelength λ=500×10−9 m Slit width a=25 mm=25×10−3 m Angular divergence θ=? ⇒θ=λa =500×10−925×10−3 =2×10−5×π180 =π9×10−6

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A parallel beam of wave length λ=500×10−9 m passes through a long slit of width 25 mm . The angular divergence for which most of light is diffracted is (10−6 radian)

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A parallel beam of wave length $λ = 500 \times 10^{- 9} m$ passes through a long slit of width $25 m m$ . The angular divergence for which most of light is diffracted is ( $10^{- 6}$ radian)