Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 27

MEDIUM

10th CBSE

IMPORTANT

Earn 100

Light travel from rarer medium $1$ to a denser medium $2$ . The angle of incidence and refraction are respectively $60 °$ and $30 °$ . Calculate the refractive index of the second medium with respect to the first medium.

Important Questions on Light - Reflection and Refraction

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 28

The refractive index of water is

4 / 3

, what is the speed of light in water?

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 29

The refractive index of glass and water with respect to air are

3 / 2

and

4 / 3

respectively. What will be the refractive index of glass with respect to water?

HARD

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 30

An object is placed at a distance of

15 cm

from a convex lens of focal length

10 cm

. Find the position and nature of the image formed.

MEDIUM

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 31

A concave lens has a focal length of

40 cm

. Calculate its power.

HARD

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 32

Two thin lenses of power

+ 5.5 D

and

- 3.5 D

are placed in contact. Find the power and focal length of the lens combination.

HARD

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 33

A concave lens of focal length

20 cm

and a convex lens of focal length

25 cm

are placed in contact with each other. What is the power of this combination? Also, calculate focal length of this combination.

HARD

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 1

Draw the ray diagram to show the image formation by a concave mirror when an object is brought closer to the mirror from infinity.

HARD

10th CBSE

IMPORTANT

Science Part-I NEW ERA PHYSICS Textbook for Class X>Chapter 4 - Light - Reflection and Refraction>IMPORTANT QUESTIONS>Q 2

Define refraction of light. State and explain the law of refraction.