The Curie temperature is the temperature above which MCQ with Answer and Explanation

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The Curie temperature is the temperature above which

A. A material becomes superconducting

B. Resistance becomes zero

C. A magnet loses its magnetism

D. Semiconductor becomes conductor

Answer: Option C

Solution (By JKSSB Mock Tests)

Curie point: ferromagnetic to paramagnetic transition.

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Practice More Physics Questions

Question #1

The defect of vision in which the lens becomes opaque is called

A. Astigmatism

B. Cataract

C. Hypermetropia

D. Myopia

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Correct Answer: Option B

Explanation:
Cataract: clouding of lens, treated by surgery.

This question belongs to: Science Physics

Question #2

Which of the following is not a transverse wave?

A. Wave on a string

B. Light wave

C. Sound wave in air

D. Radio wave

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Correct Answer: Option C

Explanation:
Sound in air is longitudinal. Light, radio are EM waves, transverse. Wave on string transverse. Water waves combine transverse and longitudinal.

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Question #3

The value of universal gravitational constant G is

A. Both A and C

B. 6.67 × 10⁻¹¹ dyne cm²/g²

C. 9.8 m/s²

D. 6.67 × 10⁻¹¹ N m²/kg²

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Correct Answer: Option A

Explanation:
G = 6.67 × 10⁻¹¹ N m²/kg² in SI, and 6.67 × 10⁻⁸ dyne cm²/g² in CGS. Both are correct. Important constant, measured by Cavendish. g is acceleration due to gravity, different.

This question belongs to: Science Physics

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