solve it pls by today only
Attachments:

Anonymous:
___k off
Answers
Answered by
1
✨Answer:
Option (A)
✨Explanation:
We have,
✔vel = dis / time
And
Also,
✔n = c/v
Where
n = refractive index
c = speed of light
v = vel in given medium
So ,
✔v = c/n
Now,
✔c/n = distance / time
➡3 x 10^8 / 1.8 = 250/ time
➡Time = 1.8 x 250/ 3 x 10^8
➡Time = 150 x 10^-8
➡Time = 1.5 x 10^-6.
Hence,
Answer : option (A)1.5 x 10^ -6
Similar questions