A boy has two lenses A and B. When lens A is kept near a printed page, letters appear magnified. When lens B is used to see a distant object, an upright image is seen. The lenses A and B are :

1. both are convex
2. both are concave
3. A ⟶ concave, B ⟶ convex
4. A ⟶ convex, B ⟶ concave

A ⟶ convex, B ⟶ concave

Reason — Convex lenses are used for magnifying objects held close to them, hence, lens A will be convex lens. Concave lenses produce upright and virtual images for objects placed beyond their focal point, hence, B is a concave lens.