Q. 1

Correct the mistakes if any, in the following statements:

i) Astronomical unit is the mean distance of the surface of the sun from the surface of the earth.

ii) Light year is the distance travelled by light in one year in vacuum at a speed of 3x108m per minute.

Answer :

(i) False.

Explaantion: An astronomical unit is defined as the distance between the centre of the Earth and the centre of the Sun.


ii) False.


Explanation: Light year is the distance travelled by light in one year in vacuum at a speed of 3x108m per second.


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