Question

if the velocity of light is 3.0×10^8 meter per second ,calculate the distance travelled by light in a light year and express it in standard form​

Answer 1

The distance traveled by light in a light year is $9.46\times10^{15}$ meters.

Step-by-step explanation:

Given : The  velocity of light=  $3.0\times10^8$ meter per second .

Length of one year = 365 days

= 365 x 24 hours                  ( ∵ 1 day = 24 hours)

= 365 x 24 x 3600 seconds          ( ∵ 1 hour = 3600 seconds)

i.e. Length of one year= 31536000 seconds =$\approx3.15\times10^7$  seconds .

Since, Distance =  Speed x Time

∴ The distance traveled by light in a light year =  $3.0\times10^8\times3.15\times10^7$  meters

$=3.0\times3.15\times10^8\times10^7$  meters

$=9.46\times10^{8+7}$  meters

$=9.46\times10^{15}$ meters.

Hence, the distance traveled by light in a light year $=9.46\times10^{15}$ meters.

#Learn more :

Definition of Velocity of Light

What is velocity of light?

https://brainly.in/question/609762