Question

If angle of glancing is 90° then
a) angle of deviation will be zero
b) angle of incidence is zero
c) the sum of angle of incidence and reflection is equal to angle of devation
d) the angle of deviation is a right angle​

Answer 1

Answer:

the sum of angle of incidence and reflection is equal to angle of devation

Explanation:

Hope it helps

Answer 2

Answer:

Angle of incidence= angle of reflection

or, 90 °− angle of incidence =90 °− angle of reflection

or, glancing angle of incidence = glancing angle of reflection

So, glancing angle of reflection=10 °