Question

The distance of a galaxy is of the order of 1029 m. Caleulate
the
order of magnitude of time taken by light to reach us from
the galaxy​

Answer 1

Answer:

t=

c

s

=

3×10

8

10

25

⟹t=3.33×10

16

s

⟹t is of the order of 10

16

s

Explanation:

this is your answer

Answer 2

The order of magnitude of time taken by light to reach us from the galaxy. 3 × 1016