Question

Assertion (A): Light year is a unit of time.
Reason (R): Light year is the distance travelled by the light in vacuum in one year.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true and R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true​

Answer 1

Explanation:

Light year is the unit of distance and not of time.

A is incorrect.

R is correct.

Hence, option D is correct