1.

In YDSE pattern with light of wavelength λ1 = 500nm, 15 fringes are obtained on a certain segment of screen. If number of fringes for light of wavelength λ2 on same segment of screen is 10, then the value of λ2 (in nm) is– 

Answer»

15 x 500 x D/d = 10 x λ2 x D/d

λ2 = 15 x 50nm

λ2 = 750nm



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