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A diffraction grating having N slits , each of width b and period d , is illuminated normally by a monochromatic plane wave of wavelength λ. What is the phase difference between waves from first and Nth slit in the heighest diffraction order?
  • a)
  • b)
  • c)
  • d)
    None
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A diffraction grating having N slits , each of width b and period d , ...
Highest number of orders with grating
dsinθ = nλ

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A diffraction grating having N slits , each of width b and period d , is illuminated normally by a monochromatic plane wave of wavelength λ. What is the phase difference between waves from first and Nth slit in the heighest diffraction order?a)b)c)d)NoneCorrect answer is option 'A'. Can you explain this answer?
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