Question

don't spam and fast answer plz ​

Answer 1

Answer:

hey bro , good morning

i know this answer

see this attachment ,

Answer 2

Answer:

refracted ray = QR

emergent ray = RS

angle 1 = angle of incidence

angle 3= angle of deviation

angle 5= angle of refraction

angle 2+ angle3 = angle 1 + angle 4