Question

CONSIDER THE FIGURE GIVEN. TGE REFLECTED RAY IS PERPENDICULAR TO THE INCIDENT RAY . ANGLE OF INCIDENCE FOR THE RAY WOULD BE :
a. 30 degree
b. 45 degree
c. 60 degree
d. 75 degree
PLZ HELP ME FRNDS ...​

Answer 1

b is the right answr.k.....kkkkk......

Answer 2

Answer:

b.45 degrees

Explanation:

as we know that incident ray is equal to the reflected ray,

i=r    ..........eq.1

i+r=90 (as it's perpendicular)     ............eq.2

using eq.1 in eq.2, we get,

i+i=90 (we have put i in place of r as they're equal)

2*i=90

i=90/2

i=45