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A bichromatic light having wavelength ga...

A bichromatic light having wavelength `gamma_1` and `gamma_2` falls normally on a single slit and produces a diffraction pattern. It is found that the first diffraction minimum for `gamma_1` is at `30^(@)` and second diffraction minimum for `gamma_2` is at `45^(@)` from the central maximum. If `gamma_1` is `5000xx10^(-8)` cm, then the value of `gamma_2` is close to:

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