Width of the principal maximum on a scre...

Width of the principal maximum on a screen at a distance of 50 cm from the slit having width 0.02 cm is `312.5xx10^(-3)cm`. If waves were incident normally on the slit, then wavelength of the light from the source will be

`6000Å`

`6250Å`

`6400Å`

`6525Å`

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