A person with hypermetropia needs MCQ with Answer and Explanation

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A person with hypermetropia needs

A. Concave lens

B. Cylindrical lens

C. Bifocal lens

D. Convex lens

Answer: Option D

Solution (By JKSSB Mock Tests)

Hypermetropia (farsightedness) corrected by converging convex lens.

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Practice More Physics Questions

Question #1

Nuclear fission is the process in which

A. Nucleus emits gamma rays

B. Light nuclei combine

C. Heavy nucleus splits

D. Electrons are emitted

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Correct Answer: Option C

Explanation:
Fission: heavy nucleus (e.g., U-235) splits into smaller nuclei plus neutrons and energy. Fusion: light nuclei combine (e.g., hydrogen to helium). Both release energy. Fission used in reactors and bombs.

This question belongs to: Science Physics

Question #2

The device that uses the principle of electromagnetic induction is

A. Electric bulb

B. Resistor

C. Electric motor

D. Transformer

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Correct Answer: Option D

Explanation:
Transformer, generator, dynamo use electromagnetic induction (Faraday's law). Motor uses magnetic effect of current. Bulb uses heating effect. Resistor limits current. Induction: changing flux induces emf.

This question belongs to: Science Physics

Question #3

A wire of resistance 9 Ω is bent to form an equilateral triangle. The resistance across any two vertices is

A. 9 Ω

B. 3 Ω

C. 2 Ω

D. 6 Ω

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Correct Answer: Option C

Explanation:
Total 9 Ω, each side 3 Ω. Across two vertices, one side is 3 Ω in parallel with series of two sides (3+3=6 Ω). Equivalent: (3×6)/(3+6) = 18/9 = 2 Ω. Triangle resistance network.

This question belongs to: Science Physics

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