Login

Taking one light year equal to 9.4 x 10 15 m and one day equal to 86400 seconds, what will be the speed of light in light year per day if the speed of light in m s -1 is 3 x 10 8 ?

the speed of light = 0.00273790926 light year per day

Your friend have constructed the correct way to get the value but somehow he miscalculated it so follow the same procedure to get the precise above mention answer.  

  • 0
View Full Answer

Nice Question 

First Of All Distance Travelled In A Day = 3*108 * 86400 = 259200*108  

Now We Divide It By One Light Year To Get Speed Of Light iN Light year per day

259200*108 = 2.592*1013

Now Dividing We Get = 2.592*1013 / 9.4*1015 = 2.592 / 9.4*102 

=> 0.00275 ly

=> 2.75*10-2

  • 4

it is incorrect. Let me give you the optins:

a) 2.75 x 10-3  ly/day  b) 3.75 x 10-3 ly/day  c) 2.75 x 103 ly/day  d) 3.79 x 103  ly/day

  • 1

Sorry Answer Is A) Option 

I Have Done A Mistake 0.00275 = 2.75*10-3

  • 1

thanks again

  • 0
What are you looking for?