Class 8 Light CBSE Questions & Answers

Class 8 · Light

This is Science Class 8 Light CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of these explain the image of building or tree in river or pond?
  • A
    Paucity
  • B
    Refraction
  • C
    Reflection
    Correct
  • D
    Luminosity
2
A red rose and a white rose are placed in front of a source of light. The colour of the shadow will be
  • A
    Same for both rose
    Correct
  • B
    Black for red rose and white for white rose
  • C
    Red for red rose and white for white rose
  • D
    Different for both rose
3
Small patches of sunlight under the tree are the
  • A
    Shadow of tree
  • B
    Images of Sun
    Correct
  • C
    Images of leaves
  • D
    Shadow of leaves
4
Burning candle cannot be seen through a bended tube because
  • A
    Light is a form of energy
  • B
    Light can bend in metallic pipe
  • C
    Light cast shadow
  • D
    Light travels in straight line
    Correct
5
Mirror is a reflecting surface but glass is a
  • A
    Opaque object
  • B
    Non-luminous object
  • C
    Luminous object
  • D
    Transparent object
    Correct
6
Plane mirror always forms image
  • A
    Inside the mirror
  • B
    In front of the mirror
  • C
    Behind the mirror
    Correct
  • D
    Above the mirror
7
Which of the following capital later look the same is a plane mirror?
  • A
    P
  • B
    D
  • C
    N
  • D
    M
    Correct
8
From a source light travels as rays which are
  • A
    Parallel
    Correct
  • B
    Divergent
  • C
    Diffused
  • D
    Convergent
9
On a sunny day, we are not able to see the shadow of Aero plane flying in the sky because
  • A
    Very large and faint image is formed
    Correct
  • B
    Aero plane is a transparent object
  • C
    Very small image is formed
  • D
    Image is not formed
10
When two mirrors are placed parallel to each other
  • A
    Only two image is formed
  • B
    No image is formed
  • C
    Large number of image are formed
    Correct
  • D
    Only image is formed
11
When an object is placed at a distance of 15 cm from a plane mirror. The image formed is at distance of
  • A
    50 cm in front the mirror
  • B
    50 cm behind the mirror
  • C
    15 cm behind the mirror
    Correct
  • D
    15 cm in front of the mirror
12
A narrow beam of light is made up of
  • A
    Only one rays of light
  • B
    Rays of light
    Correct
  • C
    Two rays of light
  • D
    Millions of rays of light
13
Light always travels in straight line. This property is called
  • A
    Convergence of light
  • B
    Diversion of light
  • C
    Dispersion of light
  • D
    Rectilinear propagation of light
    Correct
14
In a plane mirror image formed is
  • A
    Real and erect
  • B
    Virtual and erect
    Correct
  • C
    Real and inverted
  • D
    Virtual and inverted
15
If you stand before a plane mirror, your left hand appears right. This phenomenon is
  • A
    Lateral inversion
    Correct
  • B
    Shadow formation
  • C
    Diffusion of light
  • D
    Reflection of light