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CBSE Class 12-science Answered

mam can i get the meaning of wave front and superposition of light waves?
Asked by dinesh | 24 Sep, 2011, 12:00: AM
answered-by-expert Expert Answer
Wavefront is an imaginary surface joining all points in space that are reached at the same instant by a wave propagating through a medium. It is an imaginary surface representing corresponding points of a wave that vibrate in unison.
 
The superposition of light waves helps us to find the resultant of two or more light waves in motion. The word ‘superposition’ means the mixing or matching, so the superposition of light waves means the mixing of two or more light waves so that we get the combined effect of all the waves. The branch of physics called ' wave optics' is totally based on the superposition of light.
Answered by | 25 Sep, 2011, 12:16: PM

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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
find the intensity at a point on a screen in young double slit experiment where the interfering wave of equal intensity have have a path difference of lemda/4,lemda/3
Asked by tannusharan31 | 05 Nov, 2023, 05:31: PM
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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Asked by rajawatmeena845 | 19 Jan, 2023, 07:21: PM
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CBSE 12-science - Physics
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.
Asked by mrwballari999 | 03 Jan, 2023, 09:33: AM
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CBSE 12-science - Physics
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Asked by balwansungh111334 | 13 Jul, 2022, 07:34: AM
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CBSE 12-science - Physics
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  
Asked by neetaspirantdoctor | 20 May, 2022, 03:57: PM
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CBSE 12-science - Physics
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Asked by arjunsah797 | 15 May, 2022, 01:18: PM
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