Question

In optical instruments, the lenses are used to form images by

• A. reflection
• B. refraction
• C. dispersion
• D. scattering

Answer 1

The correct option is B

refraction

Explanation

1. The bending of light as it passes through one transparent medium into another is known as refraction.
2. A light wave bends or refracts when it enters a new transparent substance at an angle different than 90 degrees.
3. When we look at items through different transparent substances, refraction often causes them to seem different.
4. Lenses, magnifying glasses, prisms, and rainbows are all conceivable because of this bending through refraction.

Hence, option (b) is the correct answer.