Question

OPTIONS
The light from a laser beam travels at a speed of 3,00,000,000 meters per second. How far
can it be seen within 20 nano seconds, assuming that there is no obstruction in between?
(20 nano seconds = 20 x 109 seconds)
3 m
20 m
6 m
0.6 m​

Answer 1

Answer:

0.6 seconds

hope it is helpful if you are not satisfied with my answer check with the formula e=mc²

Answer 2

Step-by-step explanation:

speed=distance/time ; distance =speed*time

now given

speed=.3 nano seconds

time=20 nano seconds

distance = .3*20 nano seconds

distance=6 nano seconds