Home › ICSE Class 10 › physics › Refraction through a Lens › Cross-section of a convex lens looks like:
Cross-section of a convex lens looks like:
ATwo outward-bulging surfaces
BTwo flat surfaces
CTwo inward-curving surfaces
DHalf disc
Answer & Solution
Correct answer: A. Two outward-bulging surfaces
1. A convex lens is thicker at the centre than the edges.
2. Both surfaces curve outwards (away from the centre).
3. So its cross-section shows two outward-bulging surfaces.
4. A concave lens has two inward-curving surfaces.
_Source: Selina Concise Physics ICSE Class 10, Ch 5 'Refraction through a Lens' (aplustopper.com extract)_
Related questions
Linear magnification produced by a converging lens for an object at 2F is:Two lenses of powers +3 D and -5 D are placed in contact. The combination:A virtual image:Image formed by a convex lens with object at infinity is:If both surfaces of a thin lens have equal radii of curvature R, the lens is called:An object is placed beyond 2F from a convex lens. Image position is:Which is the principal use of a concave lens?If the focal length of a convex lens is doubled, its power: