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 _____________ for propagation.
  • A
    Do not require medium
    Correct
  • B
    Require rarer medium
  • C
    Require denser medium
  • D
    Require medium
2
Which type of mirror is used in headlight of vehicles?
  • A
    Any one mirror
  • B
    Concave mirror
    Correct
  • C
    Plane mirror
  • D
    Convex mirror
3
In plane mirror, image formed is
  • A
    Any where behind the mirror
  • B
    At same distance from the mirror
    Correct
  • C
    Double the distance of mirror
  • D
    Half the distance of mirror
4
Objects are visible, when reflected light
  • A
    Comes out from the eyes
  • B
    Bends towards the normal
  • C
    Bounce back from surface
  • D
    Enters to our eyes
    Correct
5
When you stands in front of a small mirror. The image formed will appear to be of
  • A
    Same size and erect
    Correct
  • B
    Larger and inverted
  • C
    Smaller and erect
  • D
    Larger and erect
6
When we raise our left hand in front of plane mirror it will appear to be right hand due to phenomenon of
  • A
    Scattering
  • B
    Refraction
  • C
    Dispersion
  • D
    Lateral inversion
    Correct
7
A burning candle is placed at the distance of 25 cm in front of a large plane mirror. The image of candle will be
  • A
    Inside the mirror and real
  • B
    10 cm behind the mirror and virtual
  • C
    25 cm behind mirror and virtual
    Correct
  • D
    25 cm behind the mirror and real
8
Image formed by concave mirror may be
  • A
    Smaller or larger
    Correct
  • B
    Always smaller
  • C
    Always real
  • D
    Always magnified
9
Magnifying lens consists of
  • A
    Convex lens of long focal length
  • B
    Convex lens of short focal length
    Correct
  • C
    Concave lens of short focal length
  • D
    Concave lens of long focal length
10
Prism splits the sunlight into
  • A
    Four colours
  • B
    Seven colours
    Correct
  • C
    Five colours
  • D
    Three colours
11
The mirror which always form virtual, erect and diminished image is
  • A
    All of these
  • B
    Concave mirror
  • C
    Convex mirror
    Correct
  • D
    Plane mirror
12
Real image in lens is always formed to
  • A
    Same side of the object
  • B
    Any where on principal axis
  • C
    Between object and lens
  • D
    Opposite side of object
    Correct
13
Concave lens diverge the rays of light away from each other so it is called as
  • A
    Bifocal lens
  • B
    Converging lens
  • C
    Cylindrical lens
  • D
    Diverging lens
    Correct
14
Which of the following instrument do not use lens?
  • A
    Microscope
  • B
    Telescope
  • C
    Spectacles
  • D
    Periscope
    Correct
15
Which type of mirror will you use to form a virtual, erect and magnified image of an object?
  • A
    Convex mirror
  • B
    Concave mirror
    Correct
  • C
    All of these
  • D
    Plane mirror