Question

10) If the velocity of light is given to be
2.99 X 108 m/s, calculate the distance travelled
by light in 1 year
and express it in standard form.
(This distance is known as 1 light year.)
​

Answer 1

Answer:

1 light year = $9.42*10^1^2 km$

Step-by-step explanation:

Distance = speed * time

Speed (v) = $2.99*10^8m/s$

Time (t) = 1 year

            = 365 days * 24 hours * 60 minutes * 60 seconds

            = 31536000  seconds

Distance = $2.99 *10^8*3153600 = 9.42*10^1^5 m$ = $9.42*10^1^2 km$