One astronomical unit (AU) is the MCQ with Answer and Explanation

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One astronomical unit (AU) is the

A. Distance between Earth and Moon

B. Radius of Earth

C. Distance travelled by light in one year

D. Distance between Earth and Sun

Answer: Option D

Solution (By JKSSB Mock Tests)

1 AU ≈ 1.5 × 10⁸ km, average Earth-Sun distance.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1

The unit of specific heat capacity is

A. J/°C

B. J/kg°C

C. J

D. J/kg

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Correct Answer: Option B

Explanation:
Q = m c ΔT => c = Q/(m ΔT), unit J/(kg °C).

This question belongs to: Science Physics

Question #2

A ship entering a river from sea will

A. Sink completely

B. Sink a little

C. Rise a little

D. Remain same

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Correct Answer: Option B

Explanation:
Seawater density > river water. To displace same weight, ship sinks deeper in less dense river water.

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Question #3

The frequency of a pendulum is 0.5 Hz. Its time period is

A. 2 s

B. 0.5 s

C. 5 s

D. 1 s

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Correct Answer: Option A

Explanation:
T = 1/f = 1/0.5 = 2 s.

This question belongs to: Science Physics

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