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A slit of size `0.15m` is placed at `2.1m` from a screen. On illuminated it by a light of wavelength `5xx10^-5cm`. The width of central maxima will be

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A slit of size `0.15m` is placed at `2.1m` from a screen. On illuminated it by a light of wavelength `5xx10^-5cm`. The width of central maxima will be
A. `70 mm`
B. `0.14 mm`
C. `1.4 cm`
D. `0.14 cm`
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Correct Answer - D
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