Question

find angle of incidence if angle of deviation is 90 degree?

Answer 1

$\huge\tt\underbrace\red{ANSWER}$

in this case,

total internal reflection must have taken place.

In reflection, Deviation = 180° – 2i = 90°

=2i = 90°

= i = 45°

Hope it helps uh..!

Answer 2

$\huge\tt\underbrace\red{ANSWER}$

in this case,

total internal reflection must have taken place.

In reflection, Deviation = 180° – 2i = 90°

=2i = 90°

= i = 45°

Hope it helps uh..!

Answer 3

$\huge\tt\underbrace\red{ANSWER}$

in this case,

total internal reflection must have taken place.

In reflection, Deviation = 180° – 2i = 90°

=2i = 90°

= i = 45°

Hope it helps uh..!