# NCERT Solutions for Class 10 Science Chapter 10 - Light Reflection and Refraction

NCERT Solutions for Class 10 Science Chapter 10 - Light Reflection and Refraction: In Chapter Light Reflection and Refraction, you will study all the interesting things about reflections and different types of lenses. Mirrors and lenses form images of objects. Images can be either real or virtual, depending on the position of the object. The reflecting surfaces, of all types, obey the laws of reflection. The refracting surfaces obey the laws of refraction. New Cartesian Sign Conventions are followed for spherical mirrors and lenses. Mirror formula, $\frac{1}{u}+\frac{1}{v}=\frac{1}{f}$, gives the relationship between the object distance (u), image distance (v), and focal length (f) of a spherical mirror. The focal length of a spherical mirror is equal to half its radius of curvature.

The magnification produced by a spherical mirror is the ratio of the height of the image to the height of the object. An alight ray travelling obliquely from a denser medium to a rarer medium bends away from the normal. A light ray bends towards the normal when it travels obliquely from a rarer to a denser medium. Light travels in a vacuum with an enormous speed of 3×108 m s-1. The speed of light is different in different media. The refractive index of a transparent medium is the ratio of the speed of light in a vacuum to that in the medium.

Here are the important Topics of NCERT Class 10 Science Chapter 10 - Light Reflection and Refraction mentioned below:

10.1 Reflection of Light

10.2 Spherical Mirrors

10.2.1 Image Formation by Spherical Mirrors

10.2.2 Representation of Images Formed by Spherical Mirrors Using ray Diagrams

10.2.3 Sign Convention for Reflection by Spherical Mirrors

10.2.4 Mirror Formula and Magnification

10.3 Reflection of Light

10.3.1 Reflection through a Rectangular Glass Slab

10.3.2 The Refractive Index

10.3.3 Reflection by Spherical Lenses

10.3.4 Image Formation by Lenses

10.3.5 Image Formation in Lenses using Ray Diagrams

10.3.6 Sign Convention for Spherical Lenses

10.3.7 Lenses Formula and Magnification

10.3.8 Power of a lens

In NCERT Class 10 Science Chapter 10, you will also study that, in case of a rectangular glass slab, the refraction takes place at both the air-glass interface and glass-air interface. The emergent ray is parallel to the direction of the incident ray. Lens formula, $\frac{1}{u}+\frac{1}{v}=\frac{1}{f}$, gives the relationship between the object distance (u), image distance (v), and the focal length (f) of a spherical lens. Power of a lens is the reciprocal of its focal length. The SI unit of power of a lens is dioptre.

After going through this chapter, you must be able to get the NCERT Solution of these questions which are mentioned below, as these questions are from NCERT.

• Q1. An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. Draw the ray diagram and find the position, size and the nature of the image formed.

• Q2. A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens? Draw the ray diagram.

• Q3. An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.

If you have any problem in answering these questions or you are not getting the correct answers then don't worry, NCERT Solutions for Class 10 Science Chapter 10 - Light Reflection and Refraction is there for you to help. Solutions for NCERT Class 10 Science Chapter 10 - Light Reflection and Refraction will give you answers to all the questions which are mentioned in the NCERT book. First of all, try to answer all the questions by yourself.

## NCERT Solutions for Class 10 Science - Chapter wise

 Chapter No. Chapter Name Chapter 1 Chemical Reactions and Equations Chapter 2 Acids, Bases, and Salts Chapter 3 Metals and Non-metals Chapter 4 Carbon and Its Compounds Chapter 5 Periodic Classification of Elements Chapter 6 Life Processes Chapter 7 Control and Coordination Chapter 8 How do Organisms Reproduce? Chapter 9 Heredity and Evolution Chapter 11 The Human Eye and The Colorful World Chapter 12 Electricity Chapter 13 Magnetic Effects of Electric Current Chapter 14 Sources of Energy Chapter 15 Our Environment Chapter 16 Sustainable Management of Natural Resources

## NCERT Solutions for Class 10 - Subject Wise

 NCERT Solutions for Class 10 Maths NCERT Solutions for Class 10 Science