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A grating diffracts a green light at 520 nm with 3000 lines/cm. Through what angle is the light diffracted in the first order?

A grating diffracts a green light at 520 nm with 3000 lines/cm. Through what angle is the light diffracted in the first order?

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A grating diffracts a green light at 520 nm with 3000 lines/cm. Through what angle is the light diffracted in the first order?
Transcribed Image Text:A grating diffracts a green light at 520 nm with 3000 lines/cm. Through what angle is the light diffracted in the first order?
Expert Solution
Concept and Principle:
  • A diffraction grating is used to separate the colors in incident light. It works on the principle of diffraction where light bend around small obstacles.

 

  • A diffraction grating diffracts the light into several beams in different directions and the angle of diffraction will depend on the wavelength of the light, spacing between the grating, and the incident angle.

 

  • The condition for maximum intensity is the same as double slit and is given by,

dsinθ=mλ

Here d is the space between the gratings, θ is the angular spacing, m is the order of the fringe, and λ is the wavelength of the source.

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