Define refractive index.

Important Questions on Refraction of Light

EASY

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 2

When a ray of light passes from Medium $1$ to Medium $2$, it bends away from the normal. Which of the two is the optically denser medium?

MEDIUM

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 3

A ray of light travelling in air is incident on a face of a rectangular slab and comes out from the opposite face. The angle between the incident ray and the normal to the surface is $30°$. What is the angle between the ray coming out of the slab and the normal to the face from which it comes out?

EASY

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 4

How should a ray be incident on a rectangular slab so that it comes out from the opposite side without being displaced?

EASY

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 5

Define the principal axis of a lens.

MEDIUM

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 6

Where should an object be placed before a convex lens so that a real image of the same size as the object is formed?

EASY

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 7

Where should a pin be placed before a convex lens so that the image formed is at infinity?

EASY

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 8

The focal length of a thin lens is given by $f=-10\mathrm{cm}$. Is the lens concave or convex?

EASY

10th CBSE

IMPORTANT

Foundation Science Physics for Class 10>Chapter 2 - Refraction of Light>EXERCISES>Q 9

The power of a lens used in the reading glasses of a person is $+1.5 \mathrm{D}$. Is the lens concave or convex?