A plane wave of wavelength 6250Å is incident normally on a slit of width 2×10⁻² cm. The width of the principal maximum of diffraction pattern on a screen at a distance of 50cm will be

Options

(a) 312.5×10⁻³ cm
(b) 312.5 x 10⁻⁴ cm
(c) 312 cm
(d) 312.5 x 10⁻⁵ cm

Correct Answer:

312.5×10⁻³ cm

Explanation:

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