NCERT Solutions for Class 7 Science Chapter 15 Light

NCERT Solutions for Class 7 Science Chapter 15 Light Updated for 2024 – 25

NCERT Solutions for Class 7 Science Chapter 15 Light: A Precious Resource helps students by providing the complete set of solved questions and assists them in achieving maximum marks in their examinations.

Chapter 15 Solutions for NCERT Class 7 Science are prepared by the subject experts and comprise solutions for all the questions present in Class 7 Science NCERT textbooks. We at Infinity learn, provide free NCERT Solutions for all the classes and they are available chapter-wise in PDF format. Students can download these materials from our website easily and use them for their assignments. This chapter is incorporated a wide range of topics that are very important for the students from the perspective of their future studies.

CBSE Syllabus for Class 7 Science

NCERT Solutions for Class 7 Science Chapter 15 PDF Download

In this pdf we have provided NCERT class 7 science chapter 15 questions answers from class 7 science NCERT textbook

LIGHT

NCERT Class 7th Science Chapter 15 Questions Answers

1. Fill in the blanks.

1. An image that cannot be obtained on a screen is called a ____________.
2. Image formed by a convex __________ is always virtual and smaller in size.
3. An image formed by a __________ mirror is always of the same size as that of the object.
4. An image which can be obtained on a screen is called a _________ image.
5. An image formed by a concave ___________ cannot be obtained on a screen.

2. Mark ‘T’ if the statement is true and ‘F’ if it is false.

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

3. Match the items given in Column I with one or more items in 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 image 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.

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

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.

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

7. State two differences between a convex and a concave lens.

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

9. Which type of mirror can form a real image?

10. Which type of lens always forms a virtual image?

11. A virtual image larger than the object can be produced by a

1. concave lens
2. concave mirror
3. convex mirror
4. plane mirror

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

1. 3 m
2. 5 m
3. 6 m
4. 8 m

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

NCERT Solutions for Class 7 Science Other Chapters

• Chapter 1 Nutrition In Plants
• Chapter 2 Nutrition in Animals
• Chapter 3 Fibre to Fabric
• Chapter 4 Heat
• Chapter 5 Acids, Bases, and Salts
• Chapter 6 Physical and Chemical Changes
• Chapter 7 Weather, Climate, and Adaptations of Animals to Climate
• Chapter 8 Winds, Storms, and Cyclones
• Chapter 9 Soil
• Chapter 10 Respiration in Organisms
• Chapter 11 Transportation in Animals and Plants
  
• Chapter 12 Reproduction in Plants
• Chapter 13 Motion and Time
• Chapter 14 Electric Current and Its Effects
• Chapter 15 Light
• Chapter 16 Water: A Precious Resource
• Chapter 17 Forests: Our Lifeline
• Chapter 18 Wastewater Story

Important Topics Covered in NCERT Solutions for Class 7 Science Chapter 15 Light

The important topics covered in Class 7 Science Chapter 15 Light include:

• Path of Light
• Definition of Reflection and its laws
• Images Visibility Range
• Types of mirrors: plane mirrors, spherical mirrors, concave mirrors, and convex mirrors
• Lateral Inversion
• Formation of the image through spherical mirrors
• Lenses Refraction
• Formation of the images through lenses
• Dispersion of light via the prism.

NCERT Solutions for all the classes and chapters in brief. Our interactive teaching methodology supported by innovative study material will help you remember the concepts forever. To get access to all the study material we provide, download the Infinity learn Learning App.

FAQs on NCERT Solutions for Class 7 Science Chapter 15 Light

Why is light important for us Class 7?

Light is essential for us as it enables us to see our surroundings, helps plants in photosynthesis, and is vital for the existence of life on Earth.

What are the important points of Chapter light Class 7?

The chapter covers the nature of light, its sources, the phenomenon of reflection and refraction, and the spectrum of light.

What are the colors of light Class 7?

Light is made up of colors that can be seen in a rainbow: red, orange, yellow, green, blue, indigo, and violet.

What is the source of light?

Sources of light include the Sun, bulbs, lamps, and other objects that emit light due to electrical energy or chemical reactions.

Why do we see light as white?

We see light as white because it is made up of all the colors of the spectrum combined. When these colors mix, they appear white to the human eye.

Why is light important for us?

Light is crucial for vision, the growth of plants, and the regulation of biological clocks in living organisms.

What is light used for?

Light is used for various purposes including illumination, in technology for transmitting information, and in medical applications for diagnostics and treatment.