PU E 2026 Geometrical Optics Free Quiz 3

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PU E 2026 Geometrical Optics Free Quiz 3

PU E Quiz

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General 10 MCQs

21. Which mirror converges light rays?

A. Concave mirror B. Convex mirror C. Plane mirror D. Parabolic mirror

22. Which mirror diverges light rays?

A. Concave mirror B. Convex mirror C. Plane mirror D. Parabolic mirror

23. What is the mirror formula?

A. 1/f = 1/v - 1/u B. 1/f = 1/u - 1/v C. 1/f = 1/v + 1/u D. 1/f = 1/u - 1/v

24. What is the formula for magnification in mirrors?

A. m = v/u B. m = u/v C. m = -u/v D. m = -v/u

25. Where are concave mirrors commonly used?

A. Convex mirrors B. Concave mirrors C. Plane mirrors D. Parabolic mirrors

26. What type of lenses are used in a compound microscope?

A. Two convex lenses B. Two concave lenses C. One convex and one concave lens D. Only one lens

27. What is the focal length of the objective lens in a telescope?

A. Objective of short focal length B. Objective of large focal length C. Both lenses have same focal length D. Only one lens

28. What is the formula for magnifying power of a simple microscope?

A. M = D/f B. M = f/D C. M = 1 + D/f D. M = D/f²

29. What is the formula for angular magnification of a telescope?

A. M = fₑ/f₀ B. M = f₀ + fₑ C. M = f₀ - fₑ D. M = f₀/fₑ

30. What type of image does the human eye form on the retina?

A. Real, inverted image B. Virtual, inverted image C. Real, upright image D. Virtual, upright image

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