Question

27) The change in direction of light, when it travels from one medium to another medium is.....
(a) Reflection
(b)refraction
(c) absorption
(d) none of these
28) What is the unit of refractive index.
(b) cm
(c) D
(d)unit less​

Answer 1

Answer:

Answer:B:Refraction

Hope this helps

Answer 2

Answer:

27) (a) Reflection

28) (d) unit less