Assignment for Light, Shadows and Reflection Questions and Answers Paper (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 1

State True or False

(a) Light travels in straight line

(b) A shadow can be coloured

(c) The image formed in pinhole camera is both erect and inverted

(d) Transparent object does not cast shadows

(e) A periscope is an instrument used for observing objects from a hidden position

(f) Moon is a luminous object

Answer:

a) True

b) False

c) True

d) True

e) True

f) False

Question 2

Fill in the Blank

1. The phenomenon by which we see our face in mirror is called …

2. Sun is an … object

3. A … eclipse occurs when earth comes between sun and moon in a straight line.

4. Wooden piece is an … object

5 … And … are two types of shadows

6. The objects which partially allow light to pass through them are called …

7. Speed of light is …

Answer:

1) Reflection

2) Luminous

3) Lunar

4) Opaque

5) Umbra, penumbra

6) Translucent

7) m/s

Question 3:

Match the column

Answer:

Question 4

Crossword

Solve the below crossword

Across

• 2 These objects does not allow light to pass through them
• 3 It travels in straight line
• 6 It is a device to see hidden corners

Down

• 1 This device uses reflection to create beautiful picture
• 4 These objects allows light to pass fully
• 5 These objects allow the light to pass partially

7 It is formed when opaque objects come in the path of light

Answer:

a) Translucent

b) Light

c) Shadows

d) Transparent

e) Opaque

f) Periscope

g) Kaleidoscope