Himanshu posted an Question
May 18, 2020 • 02:11 am 30 points
  • IIT JAM
  • Physics (PH)

Optics grating spacing

What is Grating spacing i know about grating element only. How to solve this question ????ans is 0.001

3 Answer(s) Answer Now
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  • 7 Comments
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  • Himanshu Pandey

    i got it ,thanks Abhishek sir u gave that much time for me only love u soooo much.. thanks rubii mam too

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    Ruby negi best-answer

    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 grating... best regards.

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    Abhishek singh Best Answer

    Grating element and grating spacing are same thing. Just two different names. Here I have attached a detailed solution. And yes, it is a very good question. a conceptually rich one. You won't believe, but I have spend more then 1 hour for this question. So it is suggested to you that read the solution atleast 2-3 times patiently. And yes, the answer is 0.001 cm. It will definitely be clear to you. here is the attached with best possible explanation. Best regards.

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    Dhairya sharma

    and we can calculte n like m attaching. you will get an idea from it.

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    Dhairya sharma

    we can calculate no of lines and it's reciprocal is grafting spacing

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