Question

# The Young's double slit experiment is performed with blue light and green light of wavelength 4360˙A and  5460˙A a respectively.  If X is the distance of 4th maxima, from the central one, then: Xblue=XgreenXblue>XgreenXblue<XgreenXblueXgreen=54604360

Solution

## The correct option is C Xblue<XgreenWidth of bands ∝λ λb<λg  ∴  bands become narrower as wavelength decreases.  Xblue=4D×λbd,Xgreen=4Dλgd XblueXgreen=λbλg=43605460,Xblue<Xgreen

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