The instrument to measure pressure difference is MCQ with Answer and Explanation

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The instrument to measure pressure difference is

A. Manometer

B. Barometer

C. Aneroid barometer

D. Hydrometer

Answer: Option A

Solution (By JKSSB Mock Tests)

Manometer measures pressure difference, often U-tube. Barometer measures atmospheric pressure.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1

A person weighs 60 kg on Earth. His weight on moon will be (g_moon = g/6)

A. 6 kg

B. 360 kg

C. 60 kg

D. 10 kg

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Correct Answer: Option D

Explanation:
Weight = mg. On moon, weight = 60×(g/6)/g = 10 kg wt. Mass remains 60 kg, but weight is 10 kg force.

This question belongs to: Science Physics

Question #2

A 100 W, 200 V bulb is connected to a 100 V supply. Power consumed is

A. 200 W

B. 100 W

C. 25 W

D. 50 W

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Correct Answer: Option C

Explanation:
R = V²/P = 40000/100 = 400 Ω. At 100 V, P = V²/R = 10000/400 = 25 W.

This question belongs to: Science Physics

Question #3

The electrical resistance of a conductor depends on its

A. Colour

B. Length and area of cross-section

C. Magnetic property

D. Transparency

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Correct Answer: Option B

Explanation:
R = ρL/A, depends on length (L), cross-sectional area (A), and resistivity (ρ) which depends on material and temperature. Not on colour or transparency.

This question belongs to: Science Physics

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