Quiz  /  Mirror formula based Class 10 MCQ Questions With Answers

  • 1. 
    Which of the following statements is/are true?

  • A convex lens has 4 dioptre power having a focal length 0.25 m
  • A convex lens has -4 dioptre power having a focal length 0.25 m
  • A concave lens has 4 dioptre power having a focal length 0.25 m
  • A concave lens has – 4 dioptre having a focal 0.25 m

  • 2. 
    The refractive index of water is 1.33. The speed of light in water will be:

  • 1.33 × 10^8 m/s
  • 3 × 10^8 m/s
  • 2.66 × 10^8 m/s
  • 2.26 × 10^8 m/s

  • 3. 
    A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is

  • -10 cm
  • 20 cm
  • -30 cm
  • -40 cm

  • 4. 
    If the power of a lens is – 2 D, what is its focal length?

  • +50 cm
  • -100 cm
  • -50 cm
  • +100 cm

  • 5. 
    The man's image appears to be-

  • upright
  • inverted
  • alive
  • moving at a different rate

  • 6. 
    A concave lens has focal length of 20 cm. At what distance from the lens a 5 cm tall object be placed so that it forms an image at 15 cm from the lens? Also calculate the size of the image formed.

  • u=-60; h' =(5/4)
  • u=-60; h' =(4/5)
  • u= +60; h' =(5/4)
  • u=+60; h' =(4/5)

  • 7. 
    Image behind the mirror is

  • virtual
  • real
  • upside down
  • upright

  • 8. 
    If the man is 4 m from the mirror, his image is how far from the mirror?

  • 2 m
  • 4 m
  • 8 m

  • 9. 
    A real image is always

  • erect
  • upright
  • inverted

  • 10. 
    In the mirror equation above d0 represents:

  • Distance of the object from the mirror
  • Distance of the image from the mirror
  • The focal length
  • The plane of incidence

  • 11. 
    Which type of mirror is shown.

  • Concave
  • Convex
  • Specular
  • Plane

  • 12. 
    Image above the principal axis (PA) is

  • virtual
  • real
  • upright
  • upside down

  • 13. 
    Name the mirror that curves inwards

  • plane mirror
  • convex mirror
  • concave mirror
  • spherical mirror

  • 14. 
    If a man’s face is 25 cm in front of concave shaving mirror producing erect image 1.5 times the size of face, focal length of the mirror would be:

  • 75 cm
  • 25 cm
  • 15 cm
  • 60 cm

  • 15. 
    A student is 2.50m away from a convex lens while her image is 1.80m from the lens, what is the focal length?

  • 1.05m
  • 2.50m
  • 1.39m
  • 0.72m

  • 16. 
    If Θ1 is 70 degrees what is Θ3?

  • 20
  • 40
  • 70
  • 90

  • 17. 
    Convex mirrors cause light to spread out.

  • True
  • False

  • 18. 
    The following is a picture of what type of mirror?

  • Convex (diverging) mirror
  • Concave (converging) mirror
  • Plane Mirror
  • Flat Mirror

  • 19. 
    This ray diagram is for which mirror?

  • concave
  • convex
  • plane
  • window

  • 20. 
    The 2 reflected rays that meet.

  • ray of incident
  • reflected image is produced
  • focal point
  • image is not produced

  • 21. 
    Which of the mirrors is used as rear view mirror in vehicles?

  • Concave
  • Convex
  • Plane

  • 22. 
    Concave mirrors can create virtual and real images.

  • True
  • False

  • 23. 
    According to the laws of reflection, if i = angle of incidence and r = angle of reflection,

  • A. i =  r
  • B. i >  r
  • C. r >  i
  • D. i is not equal to r

  • 24. 
    If Θ1 is 70 degrees what is Θ4?

  • 20
  • 40
  • 70
  • 90

  • 25. 
    If Θ2 is 40 degrees what is Θ3?

  • 40
  • 50
  • 80
  • 90

  • 26. 
    What does The law of reflection state?

  • the angle the incident ray makes with a line drawn perpendicular to the surface of the mirror.
  • shows how rays change direction when they strike mirrors and pass through lenses.
  • The angle of reflection is equal to the angle of incidence.
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