Visible light of wavelength 6000 × 10−8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minima is at 60o from the central maxima. If the first minimum is produced at θ1, then θ1 is close to a. 20o b. 45o c. 30o d. 25o

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Visible light of wavelength 6000 × 10−8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minima is at 60o from the central maxima. If the first minimum is produced at θ1, then θ1 is close to

a. 20o

b. 45o

c. 30o

d. 25o

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