Home Physics Gravitation Kepler’s laws of Planetary Motion Hubble's law states that the velocity with w…
Physics Gravitation Kepler’s laws of Planetary Motion Single Correct MCQ
Published on: September 12, 2026

Hubble's law states that the velocity with which milky way is moving away from the earth is proportional to

A
Square of the distance of the milky way from the earth
B
Distance of milky way from the earth
C
Mass of the milky way
D
Product of the mass of the milky way and its distance from the earth

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Text Solution

Verified by Experts
The correct answer is:
B
Hubble's law states that the velocity ($v$) at which a galaxy is receding from an observer is directly proportional to its distance ($d$) from that observer. This relationship can be mathematically expressed as:
$$ v = H_0 imes d $$
where $H_0$ is Hubble's constant. Hence, the greater the distance of a galaxy from Earth, the faster it appears to be moving away.
Therefore, the correct answer is Option B: Distance of milky way from the earth.

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