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CBSE Class 12-science Answered

Is central fringe is  colourful or white ?
Asked by sohit0971deswal | 04 Dec, 2019, 09:47: PM
answered-by-expert Expert Answer
There is no change in wavelength in double slit interference and single slit diffraction.
 
Colour of fringe depends on wavelength of light used.
 
If white light is used, then central maximum is white light because at central maximum there is no deviation for any wavelength
At central maximum, light of all wavelength coincide. But in other fringes wavelengths overlapping is possible
Answered by Thiyagarajan K | 05 Dec, 2019, 08:17: AM

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CBSE 12-science - Physics
find the condition for constructive and destructive interference .how does the intensity depend on the width of slit?  
Asked by shivamtkr7767 | 03 Mar, 2024, 12:45: PM
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CBSE 12-science - Physics
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In Young's double slit experiment, the two slits are separated by 0.28mm and the screen is placed at a distance of 1.4m away from the slits. the distance between the centre fringe and the fifth dark fringe is measured to be 1.35cm . calculate the wavelength of light used. Also find the fringe width if the screen is moved 0.4m towards the slits, for the same experiment set up.
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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
if separation between the two slits is increased till fringes are observed then what will happen to angular separation of fringes (my thought is here  fringes are not observed  and they are increasing till fringes show up ...so until then what will happen to angular width if we increase d-slit separation..does angular width increases or remains same  
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