Question

The diagram given below shows a right-angled prism with a ray of light incident on the side AB. (The critical angle for glass is 42°).

 

1. Copy the diagram and complete the path of the ray of light in and out of the glass prism. 

2. What is the value of the angle of deviation shown by the ray?

Answer 1

1. The required diagram is as shown in the fig. 

2. The angle of deviation is 90° as shown.