Observe the given incomplete diagram. Complete the diagram by drawing refracted rays and show the image formed.

The required diagram is given below: Here, the object is placed between the optical centre O and focus F 1 of a convex lens. Here A ' B ' is the image of the object formed. It is a virtual image as it cannot be captured on the screen. The image is erect and enlarged. It is formed behind the object.

Define the principal focus of a convex lens.

The principal focus of a convex lens is a point on the principal axis where the rays of light falling on a convex lens parallel to the principal axis, converge after refraction from the lens. Since the parallel rays of light passing through the convex lens actually meet at the focus in front of the lens, the focus is real.

Differentiate between convex mirror and concave mirror.

Convex mirror Concave mirror 1) A convex mirror diverges the light rays 1) A concave mirror converges the light rays 2) The spherical mirror in which the reflection of light takes place at the bulging surface (convex surface) is called convex mirror. 2) The spherical mirror in which the reflection of light takes place at a bent surface (concave surface) is called concave mirror. 3) The focal length is negative in a convex mirror 3) The focal length is positive in a concave mirror 4) The convex mirror produces only virtual images 4) Concave mirror produces both real and virtual images

Observe the given incomplete diagram. Complete the diagram by drawing refracted rays and show the image formed.

The required diagram is given below: Here, the object is placed between the optical centre O and focus F 1 of a convex lens. Here A ' B ' is the image of the object formed. It is a virtual image as it cannot be captured on the screen. The image is erect and enlarged. It is formed behind the object.

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2019>Q 2

MEDIUM

10th Karnataka Board

IMPORTANT

Earn 100

Convex mirror is commonly used as rear-view mirror in vehicles. Why?

Important Questions on Light - Reflection and Refraction

MEDIUM

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2019>Q 3

The focal length of a concave lens is

30 cm

. At what distance should the object be placed from the lens so that it forms an image at

20 cm

from the lens?

MEDIUM

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2019>Q 4

Draw the ray diagrams for the image formation in a convex lens when an object is placed at focus

F_{1}

.

MEDIUM

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2019>Q 5

Draw the ray diagram for the image formation in a convex lens when an object is placed beyond

2 F_{1}

.

EASY

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2020>Q 6

The image of the English letter Question Image

in convex mirror looks like

MEDIUM

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2020>Q 7

Observe the given incomplete diagram.

Question Image

Complete the diagram by drawing refracted rays and show the image formed.

MEDIUM

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2020>Q 8

Object distance and image distance of a lens are

— 30 cm

and

— 10 cm

respectively. Find the magnification and decide the type of lens used and nature of the image.

MEDIUM

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2020>Q 9

State the laws of refraction of light.

MEDIUM

10th Karnataka Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 10 - Light - Reflection and Refraction>Karnataka Board-2020>Q 10

In the given figure, AB is the incident ray, BC is the refracted ray and MN is the normal at the point of incidence. Which medium is more
denser? Why?

Question Image

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