Q.

Statement-1: In Young’s double slit experiment, the number of fringes observed in the field of view is small with longer wavelength of light and is large with shorter wavelength of light.
Statement-2: In the double slit experiment the fringe width depends directly on the wavelength of light.
 

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a

Statement-1 is false and the  Statement-2 is true

b

Statement-1 is true and the Statement-2 is false.

c

Statement-1 is true Statement-2 is true and the Statement-2 is not correct explanation of the Satement-1.

d

Statement-1 is true, Statement-2 is true and the Statement-2 is correct explanation of the Statement-1

answer is A.

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Detailed Solution

Fringe width ms-1 [B equals to Dd×λ]
And number of fringes observed in the field of view is obtained by dλ
 

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Statement-1: In Young’s double slit experiment, the number of fringes observed in the field of view is small with longer wavelength of light and is large with shorter wavelength of light.Statement-2: In the double slit experiment the fringe width depends directly on the wavelength of light.