Question

In a diffraction pattern due to a single slit of width a, the first minimum is observed at an angle ${30}^{\circ }$ when light of wavelength $5000\stackrel{\circ }{A}$ is incident on the slit. The first secondary maximum is observed at an angle of

• A. $si{n}^{-1}\frac{2}{3}$
• B. $si{n}^{-1}\frac{1}{2}$
• C. $si{n}^{-1}\frac{3}{4}$
• D. $si{n}^{-1}\frac{1}{4}$

Answer 1

The correct option is C $si{n}^{-1}\frac{3}{4}$

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