In a diffraction pattern due to a singleslit of width a, the first minimum is observed at an angle 30⁰ when light of wavelength 5000Å is incident on the slit. The first secondary maximum is observed at an angle of

Options

(a) sin⁻¹(2/3)
(b) sin⁻¹(1/2)
(c) sin⁻¹(3/4)
(d) sin⁻¹(1/4)

Correct Answer:

sin⁻¹(3/4)

Explanation:

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