Question

When a ray of light goes from one medium to another there is
(I) Always a change in it's speed as well as direction
(ii) No change in the direction of speed
(iii) A change in it's speed but no change in direction
(iv) A change in direction but constant speed

Answer 1

Answer:

the answer is 3 my friend

Explanation:

mark me as the brightest if it's the right answer

Answer 2

Answer:

1. always a change in its speed as well as direction