The force that binds nucleons in a nucleus is MCQ with Answer and Explanation

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The force that binds nucleons in a nucleus is

A. Electrostatic

B. Gravitational

C. Strong nuclear force

D. Weak nuclear force

Answer: Option C

Solution (By JKSSB Mock Tests)

Strong nuclear force, short range, attractive.

This question belongs to: Science Physics

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Question #1

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A radioactive nucleus emits a beta particle. Its mass number

A. Remains unchanged

B. Decreases by 2

C. Decreases by 1

D. Increases by 1

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Correct Answer: Option A

Explanation:
β⁻ decay: n → p + e⁻, so A unchanged, Z increases by 1.

This question belongs to: Science Physics

Question #2

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The work done by a centripetal force in half revolution is

A. mv²

B. Zero

C. 2F r

D. πrF

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Correct Answer: Option B

Explanation:
Centripetal force always perpendicular to displacement, work zero.

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Question #3

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The density of a substance is 8 g/cm³. In SI, it is

A. 800 kg/m³

B. 8000 kg/m³

C. 8 kg/m³

D. 80 kg/m³

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Correct Answer: Option B

Explanation:
1 g/cm³ = 1000 kg/m³, so 8 g/cm³ = 8000 kg/m³.

This question belongs to: Science Physics

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