Home
Class 14
MATHS
A star is 8. 1xx10^(13) km away fr...

A star is `8. 1xx10^(13)` km away from the earth. Suppose light travels at the speed of `3. 0xx10^5` km per second. How long will it take the light from the star to reach the earth? `7. 5xx10^3hou r s` b. `7. 5xx10^4\ hou r s` c. `2. 7xx10^(10)\ s e con d s` d. `2. 7xx10^(11)s e con d s`

Promotional Banner

Similar Questions

Explore conceptually related problems

Light travels at a speed of 3 xx 10^8 m s^(-1) . How long does light take to reach the earth from the sun, which is 1.5 xx 10^11 m away?

Light travels with a speed of 3xx10^(8) m s^(-1) . The distance travelled by light in 1 femto second is

Car is driven at the speed of 100 km/hr and stops for 10 minutes t the end of every 150 km. to cover a distance of 1000 km, it will take 9 hou r s b. 10 hou r s c. 11 hou r s d. 12 hou r s

3 xx 10^(5) + 4 xx 10^(3) + 7 xx 10^(2) + 5 is equal to

It takes time 8 min for light to reach from the sun to the earth surface. If speed of light is taken to be 3 xx 10^8 m s^(-1) , find the distance from the sun to the earth in km.

The distance of a galaxy from the earth is 5.6 xx 10^(25) m. Assuming the speed of light to be 3 xx 10^8 m s^(-1) find the time taken by light to travel this distance.