A convex mirror is used as a rear-view mirror because it MCQ with Answer and Explanation

Question Report Error

A convex mirror is used as a rear-view mirror because it

A. Gives wider field of view

B. Magnifies image

C. Gives real image

D. Inverts image

Answer: Option A

Solution (By JKExamLibrary)

Convex mirror diverges rays, gives erect, diminished, virtual image with wider field. Concave would magnify but narrow field. Plane gives normal view. Safety advantage.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

A tuning fork of frequency 256 Hz is sounded. In 1 second, number of compressions produced is

A. 1

B. 512

C. 256

D. 128

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Correct Answer: Option C

Explanation:
Each cycle produces one compression. 256 cycles, 256 compressions.

This question belongs to: Science Physics

Question #2 Report Error

Polarization proves light is:

A. Longitudinal wave

B. Mechanical wave

C. Transverse wave

D. Matter wave

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Correct Answer: Option C

Explanation:
Polarization possible only for transverse waves (oscillations ⊥ propagation). Longitudinal waves (sound) cannot be polarized. Memory aid: 'Polarization ⇒ transverse nature; light is EM transverse wave'. Wave property frequently tested in competitive exams.

This question belongs to: Science Physics

Question #3 Report Error

The process of combining two light nuclei to form a heavier nucleus is

A. Fission

B. Fusion

C. Chain reaction

D. Radioactive decay

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Correct Answer: Option B

Explanation:
Nuclear fusion: e.g., hydrogen isotopes deuterium and tritium fuse to helium, releasing energy. Powers Sun and stars. Requires high temperature (thermonuclear). Fusion reactor under development.

This question belongs to: Science Physics

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