in series betwed ation and (b) the ph Chapter -27 Interference and Wave Nature of Light...

Question

Question

Answer 1

Answer #1

The distance of the nth bright fringe from the central bright (y) = m*D*(wavelength)/(d);

0.0375 = 2* 3.5* (wavelength)/0.00012; (m = 2 for second order maxima)

wavelength = 6.428* 10^-7 m;

= 642.8 nm.(D option is correct)

Answer 2

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