Question

What is the order of magnitude of light year in metre

Answer 1

Answer:

10 16 m order of magnitude

Answer 2

Answer:

One light year is the distance of light at a speed 3×10

8

m/s in 1 year.

Thus, 1 light year =3×10

8

m/s×1 year =3×10

8

m/s×(365×24×3600s)=9.5×10

15

m

According to rule of order of magnitude, as 9.5>5 so 9.5 will be taken as 10.

Thus, order of magnitude of one light year =10×10

15

=10

16

m

HOPE THIS HELPS YOU!!