Class 10 Exam  >  Class 10 Notes  >  Extra Documents, Videos & Tests for Class 10  >  Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10

Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 | Extra Documents, Videos & Tests for Class 10 PDF Download

Lakhmir Singh Physics Class 10 Solutions Page No:249

Question 44: An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens.

Solution :

Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 | Extra Documents, Videos & Tests for Class 10
Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 | Extra Documents, Videos & Tests for Class 10


Lakhmir Singh Physics Class 10 Solutions Page No:251

Question 1: If the image formed by a lens is always diminished and erect, what is the nature of the lens ?

Solution : Concave lens.

Question 2: Copy and complete the diagram below to show what happens to the rays of light when they pass through the concave lens :

Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 | Extra Documents, Videos & Tests for Class 10

Solution :

Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 | Extra Documents, Videos & Tests for Class 10

The document Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 | Extra Documents, Videos & Tests for Class 10 is a part of the Class 10 Course Extra Documents, Videos & Tests for Class 10.
All you need of Class 10 at this link: Class 10
5 videos|292 docs|59 tests

Top Courses for Class 10

FAQs on Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 - Extra Documents, Videos & Tests for Class 10

1. What is refraction of light?
Ans. Refraction of light is the bending or change in direction of light as it passes from one medium to another medium of different optical density. This phenomenon occurs because the speed of light changes when it enters a different medium, causing the light rays to bend.
2. How does refraction of light occur?
Ans. Refraction of light occurs due to the change in speed of light when it travels from one medium to another. When light enters a medium with a higher optical density, it slows down and bends towards the normal. Conversely, when light enters a medium with a lower optical density, it speeds up and bends away from the normal.
3. What is the refractive index of a medium?
Ans. The refractive index of a medium is a measure of how much the light slows down or speeds up when it enters that medium compared to its speed in a vacuum. It is defined as the ratio of the speed of light in vacuum to the speed of light in the medium. The refractive index is denoted by the symbol 'n' and is a dimensionless quantity.
4. How does the refractive index affect the bending of light?
Ans. The refractive index of a medium determines the amount of bending or deviation of light when it enters that medium. A higher refractive index means that light will slow down more and bend more towards the normal. Conversely, a lower refractive index results in less bending and the light rays bending away from the normal.
5. How does refraction of light contribute to optical illusions?
Ans. Refraction of light can lead to optical illusions by causing the apparent displacement or distortion of objects. For example, when light passes through a prism, it undergoes refraction and separates into its constituent colors, creating a rainbow-like effect. Similarly, mirages are also a result of refraction, where the bending of light creates the illusion of water on a hot road or desert.
5 videos|292 docs|59 tests
Download as PDF
Explore Courses for Class 10 exam

Top Courses for Class 10

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

pdf

,

Sample Paper

,

Class 10 | Extra Documents

,

Videos & Tests for Class 10

,

Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh

,

ppt

,

Semester Notes

,

Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh

,

Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh

,

Videos & Tests for Class 10

,

Free

,

mock tests for examination

,

Summary

,

Objective type Questions

,

video lectures

,

shortcuts and tricks

,

Class 10 | Extra Documents

,

MCQs

,

Viva Questions

,

Important questions

,

Class 10 | Extra Documents

,

Exam

,

Extra Questions

,

Previous Year Questions with Solutions

,

study material

,

past year papers

,

Videos & Tests for Class 10

,

practice quizzes

;