White light forms a continuous spectrum of minimum wavelength 3800 A0 corresponding to violet light and maximum wavelength 7800 A0 corresponding to red light. Find the minimum and maximum frequencies of white light. (c = 3 ×108 m/s).

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3.846 × 1014 Hz; 7.895 × 1014 Hz

2.546 × 1014 Hz; 6.985 × 1014 Hz

4.846 × 1014 Hz; 8.895 × 1014 Hz

1.546 × 1014 Hz; 5.985 × 1014 Hz

answer is A.

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Detailed Solution

fmin=vλmax, fmax=vλminfmin=3 x 1087800 x 10-10=3.84 x 1014fmax=3 x 1083800 x 10-10=7.895 x 1014

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