SEBA Class 7 Science Chapter 4 Fun with Light: Shadow and Reflection

SEBA Class 7 Science Chapter 4 Fun with Light: Shadow and Reflection Solutions English Medium As Per SCERT New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 7 Science Chapter 4 Fun with Light: Shadow and Reflection Notes and select need one. SEBA Class 7 Science Textual Notes Download PDF. SCERT Class 7 Science New Textbook Question Answer in English.

SEBA Class 7 Science Chapter 4 Fun with Light: Shadow and Reflection

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. SCERT Class 7 Amar Bijnan (Science) Textual Solutions are part of All Subject Solutions. Here we have given SCERT Class 7 Amar Bijnan (Science) Question Answer for All Chapters, You can practice these here.

Fun with Light: Shadow and Reflection

Chapter: 4

PART – I

EXERCISES

1. Darken the circle of correct answer.

(i) Which of the following is an artificial source of light?

(a) Sun.

(b) Firefly.

(c) Jelly fish.

(d) Electric bulb.

Ans: (d) Electric bulb.

(ii) Which of the following is not essential for formation of a shadow?

(a) Screen.

(b) Object.

(c) Colour of the object.

(d) Source of light.

Ans: (c) Colour of the object.

(iii) The colour of a shadow is –

(a) Always black and white.

(b) Only black.

(c) Only white.

(d) Same as that of the object.

Ans: (b) Only black.

(iv) Which of these materials can we see through?

(a) A piece of iron.

(b) A piece of wood.

(c) A glass tumbler.

(d) A thick book.

Ans: (c) A glass tumbler.

(v) Sima is 3m away from a plane mirror. If she moves few steps closer to the mirror, what change will happen to the size or the image in the mirror?

(a) Will decrease.

(b) Will increase.

(c) Will be same.

(d) Will be inverted.

Ans: (c) Will be same.

2. Fill in the blanks.

(i) A shadow has no __________.

Ans: Inversion.

(ii) Pinhole camera forms __________ image.

Ans: Inverted.

(iii) Rubber is ________ but glass is ___________.

Ans: Opaque, Transparent.

(iv) When we look in a plan mirror, left hand of our body looks like right hand. This phenomenon is called ___________.

Ans: Lateral inversion.

3. Write True or False:

(i) Non luminous objects emit the light of their own.

Ans: False.

(ii) Light travels in the form of rectilinear propagation.

Ans: True.

(iii) Periscope is based on the principle of reflection of light.

Ans: True.

(iv) Moon is luminous object.

Ans: False.

4. Match the following:

PART – A	PART – B
(i) A body that allows light to pass through it.	(i) Luminous object.
(ii) Moon.	(ii) Reflection.
(iii) A body emitting its own light.	(iii) Transparent object.
(iv) Bouncing back of light from a surface.	(iv) Non-Luminous object.

Ans: 

PART – A	PART – B
(i) A body that allows light to pass through it	(iii) Transparent object
(ii) Moon	(iv) Non-Luminous object
(iii) A body emitting its own light	(i) Luminous object
(iv) Bouncing back of light from a surface	(ii) Reflection

5. Think and Answer.

(i) Can an object have more than one shadow?

Ans: Yes, an object can have more than one shadow if there are multiple sources of light shining on it from different directions.

(ii) What are the conditions needed for a shadow to be formed?

Ans: To form a shadow, we need a light source, an opaque object, and a screen (like a wall or ground).