Question

A ray of light makes an angle of 50 degree with the surface s1 of glass slab . its angle of incidence will be ​

Answer 1

angle of incidence would be 40°.

When a ray of light came frm denser to rarer medium than it bends away frm the normal.

so

90-50

40°

hope it helps u

Answer 2

HEYA MATE !!!!!!!!

ANSWER:-

Angle X = 50°.  

We also know from the second law of reflection that, Angle of incidence (i) = Angle of Reflection (r) .  

And, The angle of a straight line is 180°.  

Therefore, 50°+ i + r + 50° = 180°

=> 100°+i+i = 180° (since i=r)  

=> 2i = 180°-100°

=> i = 80°÷2

=> i = 40°

Therefore, angle of incidence is 40°.

HOPE IT HELPS !!!!          ^-^