WBJEE · Physics · Wave Optics
In Young's experiment for the interference of light, the separation between the slits is \(d\) and the distance of the screen from the slits is \(D\). If \(D\) is increased by \(0.5 \%\) and \(d\) is decreased by \(0.3 \%\) then for the light of a given wavelength, which one of the following is true? "The fringe width.........
- A increases by \(0.8 \%\)
- B decreases by \(0.8 \%\)
- C increases by \(0.2 \%\)
- D decreases by \(0.2 \%\)
Answer & Solution
Correct Answer
(A) increases by \(0.8 \%\)
Step-by-step Solution
Detailed explanation
As we know that, fringe width, \(\beta=\frac{\lambda D}{d}\) where, \(\lambda=\) wavelength of light \(D=\) Distance of the screen from the slits \(d=\) separation between the slits Now,…
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