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CBSE Class 12-science Answered

state huygen's principle. using huygen's principle construct a ray diagram for a plane wavefront getting incident on a denser medium
Asked by shahishrishti | 02 Mar, 2016, 08:42: PM
answered-by-expert Expert Answer
Dear shahishrishti@gmail.com

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.

The answer to your query is given on page number 355-356 of NCERT XII textbook PART II.

Regards

Topperlearning Team.
Answered by Romal Bhansali | 03 Mar, 2016, 11:03: 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?  
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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
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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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Asked by balwansungh111334 | 13 Jul, 2022, 07:34: AM
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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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