Physics MCQs: Most Important Questions for Exams

McqsTestz.com has uploaded a comprehensive collection of Physics MCQs covering a wide range of topics including mechanics, thermodynamics, electromagnetism, optics, modern physics, waves, fluids, and more. Perfect for students preparing for exams such as matriculation, intermediate, competitive tests, Lecturer and university-level assessments.

Physics MCQs

Two convex lenses of equal focal length f are placed in contact the resultant focal length of the combination is______________?

A. zero

B. focus

C. 2 f

D. f/2

For normal adjustment, length of astronomical telescope is______________?

A. fo + fe

B. fo – fe

C. fo / fe

D. fe / fo

Final image produced by a compound microscope is_____________?

A. real and inverted

B. real and erect

C. virtual and erect

D. virtual and inverted

In multimode step index fibre the refractive index of core and cladding is____________?

A. same

B. different

C. zero

D. different with refractive index of core higher than cladding

A convex lens of focal length f1 and a concave lens of focal length f2 are placed in contact. The focal length of the combination is_____________?

A. f2 + f1

B. f2 – f1

C. f1f2/f2+f1

D. f1f2/f1-f2

If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to suffer from______________?

A. chromatic aberration

B. spherical aberration

C. both spherical and chromatic

D. distortion

The least distance of distinct vision for a normal eye is_______________?

A. 15 cm

B. 25 cm

C. 30 cm

D. 40 cm

Magnifying power of simple microscope______________?

A. increase with increase in focal length

B. increase with decrease in focal length

C. no effect with decrease or increase with focal length

D. list distance of distinct vision

If an object is placed away from 2f of a converging lens then the image will be_______________?

A. real and erect

B. virtual and erect

C. real and inverted

D. virtual

The power of a concave lens is_______________?

A. real

B. virtual

C. positive

D. negative

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