CBSE  /  Class 10  /  Science  /  Light Reflection and Refraction

  • 1. 
    A full length image of a distant tall building can definitely be seen by using

  • a concave mirror
  • a convex mirror
  • a plane mirror
  • both concave as well as plane mirror

  • 2. 
    In torches, search lights and headlights of vehicles the bulb is placed

  • between the pole and the focus of the reflector
  • very near to the focus of the reflector
  • between the focus and centre of curvature of the reflector
  • at the centre of curvature of the reflector

  • 3. 
    The laws of reflection hold good for

  • plane mirror only
  • concave mirror only
  • convex mirror only
  • all mirrors irrespective of their shape

  • 4. 
    The path of a ray of light coming from air passing through a rectangular glass slab traced by four students are shown as A, B, C and D in figure. Which one of them is correct?

  • A
  • B
  • C
  • D

  • 5. 
    You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?

  • Kerosene
  • Water
  • Mustard oil
  • Glycerine

  • 6. 
    Which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in figure?

  • Fig. A
  • Fig. B
  • Fig. C
  • Fig. D

  • 7. 
    Which of the following ray diagrams is correct for the ray of light incident on a lens shown in figure?

  • Fig. A
  • Fig. B
  • Fig. C
  • Fig. D

  • 8. 
    A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.

  • Plane, convex and concave
  • Convex, concave and plane
  • Concave, plane and convex
  • Convex, plane and concave

  • 9. 
    In which of the following, the image of an object placed at infinity will be highly diminished and point sized?

  • Concave mirror only
  • Convex mirror only
  • Convex lens only
  • Concave mirror, convex mirror, concave lens and convex lens

  • 10. 
    Light travel fastest in

  • Water
  • Air
  • Glass
  • Diamond
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