Question

A glass gives different deviation for different frequencies. It disperses white into various colours, then which of the following is correct?

• A. Ray 1 is red and ray 2 is violet
• B. Ray 3 and ray 4 are parallel to each other and also parallel to A
• C. Ray 3 and ray 4 are parallel to each other but not parallel to ray A
• D. Ray 3 is parallel to ray 2

Answer 1

The correct option is B Ray 3 and ray 4 are parallel to each other and also parallel to A

Violet bends more than red and (3), (4) are parallel to A because angle of emergence = angle of incidence in same medium.