16 17 18 19 20 21 A 21 B 22 23 24 A 24 B 25 A 25 B

Lakhmir Singh & Manjit Kaur - Physics

Very Short Answer Type Questions-Pg-173

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Short Answer Type Questions-Pg-173

16 17 18 19 20 21 A 21 B 22 23 24 A 24 B 25 A 25 B

Long Answer Type Questions-Pg-174

26 27 28 29 A 29 B 29 C

Multiple Choice Questions (MCQs)-Pg-174

30 31 32 33 34 35

Questions Based on High Order Thinking Skills (HOTS)-Pg-175

Very Short Answer Type Questions-Pg-178

Short Answer Type Questions-Pg-179

Long Answer Type Questions-Pg-179

11 12 A 12 B 13 A 13 B

Multiple Choice Questions (MCQs)-Pg-179

Questions Based on High Order Thinking Skills (HOTS)-Pg-179

Very Short Answer Type Questions-Pg-189

1 2 3 4 5 6 7 8 9 10

Short Answer Type Questions-Pg-189

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Long Answer Type Questions-Pg-190

27 A 27 B 28 A 28 B

Multiple Choice Questions (MCQs)-Pg-190

29 30 31 32 33 34 35 36

Questions Based on High Order Thinking Skills (HOTS)-Pg-191

Very Short Answer Type Questions-Pg-192

Short Answer Type Questions-Pg-192

Multiple Choice Questions (MCQs)-Pg-193

Very Short Answer Type Questions-Pg-198

1 2 3 4 5 6 7 8 9 10

Short Answer Type Questions-Pg-198

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Long Answer Type Questions-Pg-199

Multiple Choice Questions (MCQs)-Pg-199

32 33 34 35 36 37 38 39 40 41

Questions Based on High Order Thinking Skills (HOTS)-Pg-200

Very Short Answer Type Questions-Pg-205

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Short Answer Type Questions-Pg-205

16 17 18 19 20 21 22 23 24 25

Long Answer Type Questions-Pg-206

26 A 26 B 26 C 27 A 27 B 27 C

Multiple Choice Questions (MCQs)-Pg-206

28 29 30 31 32 33 34 35 36

Questions Based on High Order Thinking Skills (HOTS)-Pg-207

Short Answer Type Questions-Pg-209

1 2 3 4 5 6 7 8

Long Answer Type Questions-Pg-209

Questions Based on High Order Thinking Skills (HOTS)-Pg-209

Q. 234.3( 17 Votes )

What can you see in a completely dark room? If you switch on an electric bulb in this dark room as a light source, explain how you could now see:

(a) The electric bulb

(B) a piece of white paper.

Class 10th Lakhmir Singh & Manjit Kaur - Physics 4. Reflection of light

Answer :

When we see in a completely dark room, we see nothing as there is any light in the dark room.

(a) If we switch on an electric bulb in this dark room as a light source we can see bulb due to the light emitted by it.

(b) If we switch on an electric bulb in this dark room as a light source we can see a piece of white paper as it reflects the light from the bulb falling on it.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSWhat is the difference between regular reflection of light and diffuse reflection of light? What type of reflection of light takes place from?(a) A cinema screen(b) A plane mirror(c) A cardboard(d) Still water surface of a lake NEXTA boy with a mouth 5 cm wide stands 2 m away from a plane mirror. Where is his image and how wide is the image of his mouth ?

Related Videos

NCERT | Discussion on Reflection of Light

NCERT | Discussion on Reflection of Light

NCERT | Discussion on Reflection of Light39 mins

Smart Revision | Magnification and it's Question

Smart Revision | Magnification and it's Question

Smart Revision | Magnification and it's Question41 mins

Smart Revision | Introduction to Spherical Mirror

Smart Revision | Introduction to Spherical Mirror

Smart Revision | Introduction to Spherical Mirror49 mins

Reflection of Light - Plane Mirrors

Reflection of Light - Plane Mirrors

Reflection of Light - Plane Mirrors51 mins

Smart Revision | Reflection of Light

Smart Revision | Reflection of Light

Smart Revision | Reflection of Light45 mins

Light and it's Reflection

Light and it's Reflection

Light and it's Reflection58 mins

Smart Revision | Numericals Based on Mirror Formula

Smart Revision | Numericals Based on Mirror Formula

Smart Revision | Numericals Based on Mirror Formula43 mins

$NCERT | Light- Reflection and Refraction (Part -1)$ $NCERT | Light- Reflection and Refraction (Part -1)$ NCERT | Light- Reflection and Refraction (Part -1)37 mins

Introduction to Spherical Lens

Introduction to Spherical Lens

Introduction to Spherical Lens42 mins

$Lakhmir Singh | Reflection and Refraction of Light$ $Lakhmir Singh | Reflection and Refraction of Light$ Lakhmir Singh | Reflection and Refraction of Light40 mins

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation

caricature

view all courses

RELATED QUESTIONS :

Varun’s mom is finding it difficult to cook in the kitchen as there was power cut and she was complaining about it to Varun. He immediately took a plane mirror from his shelf made it stand against a wall such that sun’s rays were focused into the kitchen directly on the cook top, due to the reflection of the mirror. There was some light now and his mother was able to finish her work.

(i) What are the characteristic of the image formed by a plane mirror?

(ii) What values did Varun display?

All In One Science

What is the distance between the image and the plane mirror, if the object is at 15 m?

Together With Science

List four characteristics of the images formed by plane mirrors.

Science - Board Papers

When a plane mirror is rotated through a certain angle, the reflected ray turns through twice as much and the size of the image:

Evergreen Science

A plane mirror is placed vertically facing due north. An arrow pointing north-east is kept in front of the mirror. In which direction will the arrow point in this image?

Evergreen Science

Two adjacent walls and the ceiling of a rectangular room are mirror surfaced. The number of images of himself that an observer sees is:

Evergreen Science

A ray of light is incident on a plane mirror making an angle of 90° with the mirror surface. The angle of reflection for this ray of light will be:

Lakhmir Singh & Manjit Kaur - Physics

The image of an object formed by a plane mirror is:

Lakhmir Singh & Manjit Kaur - Physics

The image of an object formed by a plane mirror is:

Lakhmir Singh & Manjit Kaur - Physics

The figure given alongside shows the image of a clock as seen I a plane mirror. The correct time is:

Lakhmir Singh & Manjit Kaur - Physics