Question

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
3x10^8m per minute.

TNSCERT Class 10 Physics Ch 14 Measuring Instruments

Answer 1

both the sentences are correct...........

Answer 2

i)Astronomical unit is the mean distance of the surface of the sun from the surface of the earth. TRUE
ii)Light year is the distance travelled by light in one year in vacuum at a speed of 3x10^8m per minute. TRUE
hence both the sentences are correct.