The scientist who gave the law of inertia was MCQ with Answer and Explanation

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The scientist who gave the law of inertia was

A. Copernicus

B. Kepler

C. Newton

D. Galileo

Answer: Option D

Solution (By JKSSB Mock Tests)

Galileo first proposed concept of inertia. Newton formalized.

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Practice More Physics Questions

Question #1

A pump lifts 100 kg of water through 5 m in 2 s. Power (g=10) is

A. 250 W

B. 500 W

C. 2500 W

D. 1000 W

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Correct Answer: Option C

Explanation:
Work = 100×10×5=5000 J. Power = 5000/2 = 2500 W.

This question belongs to: Science Physics

Question #2

The energy stored in an inductor of inductance L carrying current I is

A. ½LI

B. ½LI²

C. LI²

D. L²I

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Correct Answer: Option B

Explanation:
Magnetic energy stored = ½ L I², analogous to capacitor energy ½ C V². L is inductance in henry (H). Energy stored in magnetic field.

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Question #3

The device which converts AC to DC is called

A. Oscillator

B. Transformer

C. Rectifier

D. Inverter

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Correct Answer: Option C

Explanation:
Rectifier (diode bridge) converts AC to DC. Inverter DC to AC. Transformer changes AC voltage level. Oscillator generates AC signal. Electronic devices often need DC.

This question belongs to: Science Physics

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