NCERT Solutions | Class 7 Science Chapter 15 | Light

CBSE Solutions | Science Class 7

Check the below NCERT Solutions for Class 7 Science Chapter 15 Light Pdf free download. NCERT Solutions Class 7 Science were prepared based on the latest exam pattern. We have Provided Light Class 7 Science NCERT Solutions to help students understand the concept very well.

NCERT | Class 7 Science

NCERT Solutions Class 7 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	7th
Subject:	Science
Chapter:	15
Chapters Name:	Light
Medium:	English

Light | Class 7 Science | NCERT Books Solutions

You can refer to MCQ Questions for Class 7 Science Chapter 15 Light to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

cbse class 7 science notes pdf, Question 1.

Fill in the blanks:

An image that cannot be obtained on a screen is called ………
The image formed by a convex ……… is always virtual and smaller in size.
An image formed by a ………. mirror is always of the same size as that of the object.
An image which can be obtained on a screen is called a ………. image.
An image formed by a concave ………. cannot be obtained on a screen.

cbse science class 7 solutions, Answer :

virtual image
mirror
plane
real
lens

cbse class 7 science syllabus pdf, Question 2.

Mark “T” if the statement is true and ‘F’ if it is false:

We can obtain an enlarged and erect image by a convex mirror. (T/F)
A concave lens always forms a virtual image. (T/F)
We can obtain a real, enlarged, and inverted image by a concave mirror. (T/F)
A real image cannot be obtained on a screen. (T/F)
A concave mirror always forms a real image. (T/F)

ncert class 7 science Chapter 15 question answer, Answer :

cbse science class 7 book, Question 3.

Match the items given in Column I with one or more items of Column II.

Column I	Column II
(a) A plane mirror	(i) Used as a magnifying glass.
(b) A convex mirror	(ii) Can form images of objects spread over a large area.
(c) A convex lens	(iii) Used by dentists to see an enlarged images of teeth.
(d) A concave mirror	(iv) The image is always inverted and magnified.
(e) A concave lens	(v) The image is erect and of the same size as the object.
	(vi) The image is erect and smaller in size than the object.

cbse science class 7 solutions, Answer :

Column I	Column II
(a) A plane mirror	(v) The image is erect and of the same size as the object.
(b) A convex mirror	(ii) Can form images of objects spread over a large area.
(c) A convex lens	(i) Used as a magnifying glass.
(d) A concave mirror	(iii) Used by dentists to see enlarged images of teeth.
(e) A concave lens	(vi) The image is erect and smaller in size than the object.

cbse science class 7 book pdf, Question 4.

State the characteristics of the image formed by a plane mirror.

ncert class 7 science Chapter 15 question answer, Answer :

Image formation by a plane mirror. We are able to see images using a mirror. An image formed by a mirror (flat) has the following features:
NCERT Solutions for Class 7 Science Chapter 15 Light Q.4

NCERT Solutions for Class 7 Science Chapter 15 Light Q.4

In a plane mirror, the image is formed behind the mirror. It is erect, of the same size, and is at the same distance from the mirror as the object is in front of it.

cbse science class 7 Chapter 15, Question 5.

Find out the letters of the English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.

cbse science class 7 solutions, Answer :

A, H, I, M, 0, T, U, V, W, X, Y.

cbse science class 7 syllabus, Question 6.

What is a virtual image? Give one situation where a virtual image is formed.

ncert class 7 science Chapter 15 question answer, Answer :

The image that cannot be formed on a screen is called a virtual image. The image formed by a plane mirror is virtual because the image cannot be obtained on a screen when placed either in front of the mirror or behind it.

class 7 science Chapter 15, Question 7.

State two differences between a convex and a concave lens.

cbse science class 7 solutions, Answer :

Convex lens	Concave lens
1. It is thicker in the middle and thinner at the edges.	1. It is thinner in the middle and thicker at the edges.
2. Converges the light falling on it.	2. Diverges the light falling on it.
3. Can form virtual, erect, and magnified images.	3. Always forms erect, virtual, and smaller images.

NCERT Class 7 Science book, Question 8.

Give one use each of a concave and a convex mirror.

ncert class 7 science Chapter 15 question answer, Answer :

Concave mirror: Used by dentists to see teeth.
Convex mirror: Used in vehicles as a rearview mirror.

NCERT Class 7 Science book PDF, Question 9.

Which type of mirror can form a real image?

cbse science class 7 solutions, Answer :

A concave mirror can form a real image.
NCERT Solutions for Class 7 Science Chapter 15 Light Q.9

Fig. Convex mirror as a side-view mirror

ncert class 7 science Chapter 15, Question 10.

Which type of lens forms always a virtual image?

ncert class 7 science Chapter 15 question answer, Answer :

A concave lens.

Choose the correct option in questions 11-13:

ncert class 7 science Chapter 15 notes, Question 11.

A virtual image larger than the object can be produced by a
(i) concave lens
(ii) concave mirror
(iii) convex mirror
(iv) plane mirror

cbse science class 7 solutions, Answer :

(ii) Concave mirror

NCERT Science book Class 7 Solutions PDF free download, Question 12.

David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be:
(i) 3 m
(ii) 5 m
(iii) 6 m
(iv) 8 m

ncert class 7 science Chapter 15 question answer, Answer :

(iii) 6 m

ncert science class 7 book, Question 13.

The rearview mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rearview mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be:
(i) 1 m/s
(ii) 2 m/s
(iii) 4 m/s
(iv) 8 m/s

cbse science class 7 solutions, Answer :

(iii) 4 m/s