Ask Question
28 October, 20:20

A diffraction grating is illuminated simultaneously with red light of wavelength 670 nm and light of an unknown wavelength. The fifth-order maximum of the unknown wavelength exactly overlaps the third-order maximum of the red light.

What is the unknown wavelength? (in nm)

+3
Answers (1)
  1. 28 October, 22:45
    0
    dsin∅ = m * λ

    so, dsin∅red = 3 (670nm)

    also, dsin∅? = 5λ?

    however, if they overlap then dsin∅red = dsin∅?

    3 (670nm) / 5 = 402nm

    ∴λ = 402nm
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A diffraction grating is illuminated simultaneously with red light of wavelength 670 nm and light of an unknown wavelength. The fifth-order ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers