In given figure, a light ray QB is incident normally on one face PW of an equilateral glass prism. Answer the below questions by reading the above information.
1. Find out the angles at faces PW and PR.
(i) 60º
(ii) 90º
(iii) 40º
2. What is the formula for angle of prism?
(i) A = 2r1 + r2
(ii) A = r1 + r2
(iii) A = 6r1 + r2
3. What is the formula for angle of refraction?
(i) r = sin(i) x n
(ii) r = sin(i) x 3n
(iii) r = 2sin(i) x n
4. What is the value of angle of refraction at PQ?
(i) 40º
(ii) 90º
(iii) 0º
5. What is the value for angle of prism ?
(i) 60º
(ii) 60º
(iii) 40º
