The device used to measure very high temperatures (e.g., furnace) is MCQ with Answer and Explanation

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The device used to measure very high temperatures (e.g., furnace) is

A. Thermometer

B. Thermocouple

C. Pyrometer

D. Bolometer

Answer: Option C

Solution (By JKSSB Mock Tests)

Pyrometer measures high temperatures by radiation without contact.

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Practice More Physics Questions

Question #1

The relative permeability of a ferromagnetic material is

A. Very large

B. Slightly greater than 1

C. Exactly 1

D. Slightly less than 1

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Correct Answer: Option A

Explanation:
Ferromagnetic materials have μ_r >> 1 (hundreds to thousands). Paramagnetic slightly >1, diamagnetic

This question belongs to: Science Physics

Question #2

The unit of power is

A. Watt

B. Newton

C. Pascal

D. Joule

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Correct Answer: Option A

Explanation:
Watt (W) = Joule/second. SI unit of power. Horsepower is another unit (1 HP ≈ 746 W). Joule is energy, Newton force, Pascal pressure.

This question belongs to: Science Physics

Question #3

Who gave the law of floatation?

A. Archimedes

B. Newton

C. Bernoulli

D. Pascal

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Correct Answer: Option A

Explanation:
Archimedes' principle: buoyant force = weight of displaced fluid. Law of floatation: floating body displaces fluid equal to its own weight. Archimedes discovered it. Pascal gave pressure law.

This question belongs to: Science Physics

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