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# NCERT solutions for Class 7 Science chapter 15 - Light

## Chapter 15: Light

#### Chapter 15: Light solutions [Pages 189 - 190]

Q 1.1 | Page 189

Fill in the blanks:

An image that cannot be obtained on a screen is called ________

Q 1.2 | Page 189

Fill in the blanks:

Image formed by a convex ________ is always virtual and smaller in size.

Q 1.3 | Page 189

Fill in the blanks:

An image formed by a ________ mirror is always of the same size as that of the object.

Q 1.4 | Page 189

Fill in the blanks:

An image which can be obtained on a screen is called a _______image.

Q 1.5 | Page 189

Fill in the blanks:

An image formed by a concave ________cannot be obtained on a screen.

Q 2.1 | Page 189

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)

• True

• False

Q 2.2 | Page 189

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

A concave lens always forms a virtual image. (T/F)

• True

• False

Q 2.3 | Page 189

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

We can obtain a real, enlarged and inverted image by a concave mirror. (T/F)

• True

• False

Q 2.4 | Page 189

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

A real image cannot be obtained on a screen. (T/F)

• True

• False

Q 2.5 | Page 189

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

A concave mirror always forms a real image. (T/F)

Q 3 | Page 189

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

 Column I Column II A plane mirror Used as a magnifying glass. A convex mirror Can form image of objects spread over a large area. A convex lens Used by dentists to see enlarged image of teeth. A concave mirror The image is always inverted and magnified. A concave lens The image is erect and of the same size as the object. The image is erect and smaller in size than the object
Q 4 | Page 189

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

Q 5 | Page 189

Find out the letters of 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.

Q 6 | Page 190

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

Q 7 | Page 190

State two differences between a convex and a concave lens.

Q 8 | Page 190

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

Q 9 | Page 190

Which type of mirror can form a real image?

Q 10 | Page 190

Which type of lens forms always a virtual image?

Q 11 | Page 190

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

• concave lens

• concave mirror

• convex mirror

• plane mirror

Q 12 | Page 190

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

•  3 m

•  5 m

•  6 m

• 8 m

Q 13 | Page 190

The rear view 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 rear view mirror the image of truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be

• 1 m/s

• 2 m/s

• 4 m/s

• 8 m/s

## NCERT solutions for Class 7 Science chapter 15 - Light

NCERT solutions for Class 7 Science chapter 15 (Light) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Science Textbook for Class 7 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at shaalaa.com are providing such solutions so that students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 7 Science chapter 15 Light are Light Travels Along a Straight Line, Reflection of Light, Concept of Mirror: (Right Or Left!), Playing with Spherical Mirrors, Images Formed by Lenses, Concept of Sunlight -(White Or Coloured), Dispersion of Light, Properties of Light.

Using NCERT Class 7 solutions Light exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 7 prefer NCERT Textbook Solutions to score more in exam.

Get the free view of chapter 15 Light Class 7 extra questions for Science and can use shaalaa.com to keep it handy for your exam preparation

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