Lenses

IMPORTANT

Lenses: Overview

This topic covers concepts, such as, Lenses, Types of Lenses, Image Formation by Lenses & Dispersion of Light etc.

Important Questions on Lenses

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Science>Light, Shadows and Reflections>Lenses> Q 1

Plane Mirror form which form of the image?

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Science>Light, Shadows and Reflections>Lenses> Q 2

A _____ uses two convex lenses to magnify an object and make a small object larger.

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Science>Light, Shadows and Reflections>Lenses> Q 3

What type of lens should be used as the remedy for hypermetropia?

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Science>Light, Shadows and Reflections>Lenses> Q 4

What type of lens should be used as the remedy for presbyopia?

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Science>Light, Shadows and Reflections>Lenses> Q 5

What type of lens should be used as the remedy for myopia?

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Science>Light, Shadows and Reflections>Lenses> Q 6

Under what circumstances can a concave lens act as a converging lens?

i) When the surrounding medium becomes denser than the material of the lens.
ii) When the refractive index of the lens becomes greater than 1.