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Himanshu Pandey Asked a Question
May 17, 2020 2:53 ampts 30 pts
  • IIT JAM
  • Physics (PH)

Optics a parallel beam of light comp....

Optics A parallel beam of light comp.... Answer is 0.001
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  • Ruby negi
    grating element and grating spacing is same i.e e+d... don't get confuse... look this formula.. sometimes in ques, they ask to calculate width of grating.. so W=N(e+d) is width of ...
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  • Ruby negi thankyou
    here is the solution dear, 0.001cm is the correct ans.. hope you will get it.. for any doubt please ask.
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  • Abhishek singh Best Answer
    The plane where the parallel beam of light after falling on a lens converges is called focal plane of that lens. In actual practice, the grating is always followed by a lens(I have...
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    Abhishek singh
    read the solution atleast 2-3 times as it is conceptually rich.
  • Himanshu Pandey
    also focal plane!!
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  • Himanshu Pandey
    how to solve it,main thing here Focal length is given what to do for that !!!!!
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  • Dhairya sharma thankyou
    see the attached.
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