Width of the principal maximum on a screen at a distance of 50 cm from the slit having width 0.02 cm is 312.5 × 10 - 3 c m . If waves were incident normally on the slit, then wavelength of the light from the source will be

Question

Width of the principal maximum on a screen at a distance of 50 cm from the slit having width 0.02 cm is 312.5 × 10 - 3 c m . If waves were incident normally on the slit, then wavelength of the light from the source will be, 6000 Å, 6250 Å, 6400 Å, 6525 Å

MARKS App · Accepted Answer

Width of central max. = 2 λ D a λ = 0.2 × 10 - 2 × 312.5 × 10 - 3 × 10 - 2 2 × 1 2 m = 6250 × 10 - 10 m = 6250 Å

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