Question

19. Fig. 4.35 below shows two identical prisms A and B
placed with their faces parallel to each other. A ray
of light of single colour PQ is incident at the face of
the prism A. Complete the diagram to
show the path of the ray till it emerges out of the
prism B
А
P-
Fig. 4.35​

Answer 1

Explanation:

When the ray of light entering the face of A, it suffers refraction (from air to glass) and bends towards the normal, then entering the next face of A, again suffers refraction (from glass to air) and bends away from the normal. In the same way the faces of B will be done.

REMEMBER

• refraction from air(rarer) to glass(denser), the ray of light will bend towards the normal, and vice versa

Answer 2

Answer:

When the ray of light entering the face of A, it suffers refraction (from air to glass) and bends towards the normal, then entering the next face of A, again suffers refraction (from glass to air) and bends away from the normal. In the same way the faces of B will be done.

Explanation: