PU M 2026 Physical Optics Free Quiz 3

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PU M 2026 Physical Optics Free Quiz 3

PU M Quiz

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Navigator 5 Q

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General 5 MCQs

21. What is observed when white light is used in Young's double slit experiment?

A. Central fringe is white B. Central fringe is colored C. All fringes are white D. No pattern is formed

22. What does Huygens' principle state?

A. Every point on a wavefront acts as a source of secondary wavelets B. Waves travel in straight lines C. Waves are particles D. Waves have constant speed

23. What are coherent sources?

A. Sources with random phase difference B. Sources with constant phase difference C. Sources with different frequencies D. Sources with different wavelengths

24. What is optical path difference?

A. Geometrical path length B. Refractive index C. n × d D. v × t

25. What is resolving power?

A. Magnification B. Focal length C. Aperture D. Ability to distinguish closely spaced objects

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