Name the principle involved in periscope.

Important Questions on Light, Shadows and Reflections

HARD

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 5

What is the colour of a shadow formed by a light?

EASY

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 6

Name a substance which does not allow light to pass through it.

(Lens  / Concrete wall)

EASY

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 7

What is formed when light is blocked by an opaque object? 

EASY

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 8

Sun is a luminous source of light. Is it correct? 

EASY

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 9

Moon is not considered as luminous object. Why? 

MEDIUM

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 10

Explain what do we observe on the ground when a sunlight falls on the opaque objects. 

MEDIUM

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 11

Briefly explain the reason of seeing an electric bulb at night when it is switched ON. 

HARD

6th CBSE

IMPORTANT

All in One - Science>Chapter 11 - Light, Shadows and Reflections>Chapter Test>Q 12

State the conclusion from the observation that when an object is placed in the path of light, a shadow is formed behind the object.