From the nature of the refracted rays, shown in diagram [(i) and (ii)]

1.	From the nature of the refracted rays, shown in diagram [(i) and (ii)] interpret the nature of the lens represented by the dotted line.
Answer» (i) Since the incident parallel rays are diverging after refraction, the lens represented by the dotted line must be a concave lens. (ii) Since the rays, starting from the object point ‘O’, are being made to converge to another point ‘I’, the lens used must be a convex lens.

From the nature of the refracted rays, shown in diagram [(i) and (ii)] interpret the nature of the lens represented by the dotted line.

Answer»

(i) Since the incident parallel rays are diverging after refraction, the lens represented by the dotted line must be a concave lens.

(ii) Since the rays, starting from the object point ‘O’, are being made to converge to another point ‘I’, the lens used must be a convex lens.