Question

(1) Name a physical quantity related to the unit light year​

Answer 1

Answer:

The light-year is a unit of length used to express astronomical distancesand measures about 9.5 trillion kilometres or 5.9 trillion miles.

Answer 2

Length is the physical quantity which is related to the unit light year​.

• Light year is an unit which describes the distance travelled by light rays in the time period of a whole year.

• So,it is obvious that the light year unit is related with the length and length is one of the seven basic physical quantities.

• Now,if we think more about it,then we will find that the time is also related to this unit because the travelled distance is measured in the time period of one year. And,the time is also a physical quantity.