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CBSE Class 12-science Answered

Q)
Asked by Ibrahim Mohammed | 28 Feb, 2016, 10:27: PM
answered-by-expert Expert Answer
(i) The fringe width in a Young's double slit experiment is inversely proportional to the slit width d.
So, if the distance between the slits S1 and S2 decreases, i.e. d decreases then the fringe width will increase.
 
(ii) When the entire setup is moved from air to water, the wavelength of the light reduces as refractive index increases.
Now, the fringe width is directly proportional to wavelength. So, the fringe width decreases.
Answered by Romal Bhansali | 29 Feb, 2016, 12:09: PM

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CBSE 12-science - Physics
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CBSE 12-science - Physics
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A parallel beam of light of wavelength 600 nm is incident normally on a slit of width 0.2 mm. If the resulting diffraction pattern is observed on a screen 1 m away, find the distance of (i) First minimum, and (ii) Second maximum, from the central maximum. 
Asked by suman.sh01 | 21 May, 2022, 11:09: AM
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CBSE 12-science - Physics
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