Engineering Physics MCQs – Practice Test 2 (Chapter 24)

Optical Diffraction MCQ with Answers PDF Download – Test 2

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Optical Diffraction MCQ – Practice Test 2 PDF Download

MCQ 6: The principles of diffraction gratings were discovered by:

Charles Darwin
James Gregory
Stephen Hawking
Michael Faraday

MCQ 7: If m is the order number of intensity maximum, then Bragg's law is equals to:

2dsinθ=mλ
2/dsinθ=mλ
2dsinθ=m/λ
2dsinθ=5mλ

MCQ 8: Wavelength of 1λ is approximately equals to:

10^-10 m
10¹⁰ m
10^-2 m
10² m

MCQ 9: If 'a' is single slit width and θ is angle of first dark fringle, then path length difference in single slit diffraction is equals to:

asinθ
acosθ
atanθ
acotθ

MCQ 10: When monochromic light from a distant source passes through a narrow slit and then intercepted by viewing screen, light produces on a screen is:

diffraction pattern
reflection pattern
retardation pattern
absorption pattern

Engineering Physics Notes App & e-Book – Optical Diffraction Exam Prep

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