Question

20.
14. A ray of light travelling in a transparent medium of
refractive index u, falls on a surface separating the
medium from air at an angle of incidence of 45°.
For which of the following value of u the ray can
undergo total internal reflection?
(a) u = 1.33
(b) u = 1.40
(c) u = 1.50
(d) u = 1.25 (2010)
21​

Answer 1

c) u = 1.50

hope this helps you

Answer 2

Answer:

थडदडरडरबक्षडद

Explanation:

डथडलरढजठरठर