Olympiad – Class VII – Science - Phy - Light

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Question - 1

Which one of the following statements is true?

  • A A plane mirror sometimes forms an inverted image.
  • B A concave mirror always forms a virtual, erect and diminished image.
  • C A concave lens always forms a virtual, erect and diminished image.
  • D All of the above

Question - 2

Which of the following is used for splitting sunlight into seven colours?

  • A A prism
  • B A plane mirror
  • C A concave mirror
  • D A convex lens

Question - 3

Which of the following is a natural source of light?

  • A Electric lamp
  • B Tube light
  • C Torch
  • D The sun

Question - 4

What is the nature of the propagation of light?

  • A Curvilinear
  • B Rectilinear
  • C Random
  • D Circular

Question - 5

What is rectilinear propagation of light?

  • A Travelling in curved lines
  • B Travelling in straight lines
  • C The ability to bend around obstacles
  • D The display of the phenomenon of diffraction

Question - 6

What is called a source of light?

  • A An object that can absorb light
  • B An object that can reflect light
  • C An object that can refract light
  • D An object that can emit light

Question - 7

Which of the following is a reflector of light?

  • A The sun
  • B The moon
  • C The star
  • D The filament

Question - 8

What causes the formation of shadows?

  • A Rectilinear propagation of light
  • B Curvilinear propagation of light
  • C Total internal reflection
  • D Refraction

Question - 9

Identify the nature of light emitted from a torchlight.

  • A Convergent
  • B Divergent
  • C Parallel
  • D irregular

Question - 10

What is a stream of light called?

  • A Ray
  • B Beam
  • C Twilight
  • D Sunlight