Class 7 Light CBSE Questions & Answers

Class 7 · Light

This is Science Class 7 Light CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Light is a form of
  • A
    Power
  • B
    Heat
  • C
    Temperature
  • D
    Energy
    Correct
2
Bouncing back of light in same medium is called
  • A
    Rarefaction
  • B
    Reflection
    Correct
  • C
    Refraction
  • D
    Retardation
3
When light bounces off a surface, the surface is
  • A
    Transparent
  • B
    Reflector
    Correct
  • C
    Translucent
  • D
    Opaque
4
We can see an object when it
  • A
    Reflect or emit rays of light
    Correct
  • B
    Has shining surface
  • C
    Refract or absorb the rays of light
  • D
    Has bright colour
5
A common magnifying glass is an example of
  • A
    Concave mirror
  • B
    Convex lens
    Correct
  • C
    Concave lens
  • D
    Convex mirror
6
Concave mirror is used in head light of vehicle as
  • A
    It forms the strong beam of light
  • B
    It reflect the parallel beam of light
    Correct
  • C
    It can be easily cleaned
  • D
    It is easy to use
7
Shaving mirror are usually
  • A
    Concave
    Correct
  • B
    Convex
  • C
    Plane
  • D
    Biconcave
8
The lens present in human eye is made up of
  • A
    Glass
  • B
    Plastic
  • C
    Transparent protein
    Correct
  • D
    White rubber
9
The perpendicular to the reflecting surface is called
  • A
    Refracted rays
  • B
    Reflected rays
  • C
    Normal
    Correct
  • D
    Incident rays
10
Concave lens is also known as
  • A
    Converging lens
  • B
    Biconcave lens
  • C
    Bifocal length
  • D
    Diverging lens
    Correct
11
The splitting of white light into seven colours is called
  • A
    Splitting
  • B
    Rainbow
  • C
    Dispersion
    Correct
  • D
    Spectrum
12
Virtual image is always
  • A
    Erect and magnified
  • B
    Erect and magnified or diminished
    Correct
  • C
    Inverted and diminished
  • D
    Inverted and magnified
13
Concave lens always forms
  • A
    Magnified image
  • B
    Virtual image
    Correct
  • C
    Real image
  • D
    Inverted image
14
In which of the following medium light travels fastest?
  • A
    Water
  • B
    Glass
  • C
    Air
    Correct
  • D
    Diamond
15
Which colour of light scattered least
  • A
    Blue
  • B
    Red
    Correct
  • C
    Orange
  • D
    Green