The nucleus of an atom was discovered by MCQ with Answer and Explanation

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The nucleus of an atom was discovered by

A. J.J. Thomson

B. Bohr

C. Chadwick

D. Rutherford

Answer: Option D

Solution (By JKSSB Mock Tests)

Rutherford's gold foil experiment (1911) revealed the nucleus. Thomson discovered electron.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1

The scientist who invented the telephone was

A. Marconi

B. Tesla

C. Bell

D. Edison

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Correct Answer: Option C

Explanation:
Alexander Graham Bell patented telephone in 1876.

This question belongs to: Science Physics

Question #2

The main component of natural gas used for cooking is

A. Propane

B. Methane

C. Butane

D. Ethane

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Correct Answer: Option B

Explanation:
Methane (CH₄) is primary component. LPG is mainly propane and butane. CNG is compressed methane. This relates to everyday physics and chemistry.

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Question #3

The ratio of SI to CGS unit of force is

A. 10²

B. 10³

C. 10⁷

D. 10⁵

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Correct Answer: Option D

Explanation:
SI unit Newton (kg m/s²), CGS unit dyne (g cm/s²). 1 N = 10⁵ dyne. Conversion: 1 kg = 10³ g, 1 m = 100 cm, so 1 N = 10³ × 10² = 10⁵ dyne. Ratio N/dyne = 10⁵.

This question belongs to: Science Physics

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