Q.

Statement - I :Young’s double slit experiment can be performed using a source of white light. 
Statement - II : The wavelength of red light is less than the wavelength of other colours in white light.

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a

Both statements I and II are correct

b

Statement-I is incorrect and statement-II is correct

c

Both statements I and II are incorrect

d

Statement-I is correct and statement-II is incorrect

answer is B.

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Detailed Solution

If a white light is used in the double slit experiment, the different colours will be split up on the viewing screen according to their wavelengths and central fringe will be white.
The violet end of the spectrum (with the shortest wavelengths) is closer to the central fringe, with the other colours being further away in order.S0 white light can be used .But wavelength of red light is maximum.

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