Class 10 Physics Chapter 12 MCQs – Geometrical Optics (FBISE) - MCQs

Description: Practice Class 10 Physics Chapter 12 MCQs on Geometrical Optics. These important objective questions are prepared according to the FBISE exam pattern and include conceptual, numerical, and knowledge-based MCQs.

🔹 Go to Class 10 Physics Chapter-wise MCQs
🔹 Go to All Subjects MCQs

← Go to Chapter 11
Go to Chapter 13 →

1. The branch of physics which deals with light is called:

A) Optics
B) Mechanics
C) Thermodynamics
D) Electronics

2. Light travels in a straight line. This property is called:

A) Reflection
B) Refraction
C) Rectilinear propagation
D) Dispersion

3. The speed of light in vacuum is:

A) $3 \times 10^6\,m/s$
B) $3 \times 10^8\,m/s$
C) $3 \times 10^5\,m/s$
D) $3 \times 10^3\,m/s$

4. The bouncing back of light from a surface is called:

A) Refraction
B) Diffraction
C) Dispersion
D) Reflection

5. The angle between incident ray and normal is called:

A) Angle of incidence
B) Angle of reflection
C) Critical angle
D) Refractive angle

6. According to law of reflection:

A) $i > r$
B) $i < r$
C) $i = r$
D) $i = 2r$

7. A smooth polished surface forms:

A) Diffused reflection
B) Regular reflection
C) Refraction
D) Dispersion

8. An image formed by a plane mirror is:

A) Virtual and erect
B) Real and inverted
C) Real and erect
D) Virtual and inverted

9. The image formed by a plane mirror is:

A) Diminished
B) Enlarged
C) Inverted
D) Same size as object

10. The distance between object and image in a plane mirror is:

A) Half the mirror distance
B) Twice the object distance from mirror
C) Zero
D) Infinite

11. The bending of light when it enters another medium is called:

A) Reflection
B) Diffraction
C) Refraction
D) Interference

12. Refraction occurs due to change in:

A) Speed of light
B) Frequency of light
C) Amplitude of light
D) Intensity of light

13. The ratio $\frac{\sin i}{\sin r}$ is called:

A) Magnification
B) Focal length
C) Critical angle
D) Refractive index

14. The refractive index of vacuum is:

A) 0
B) 1
C) 1.5
D) 2

15. A convex lens is also called:

A) Diverging lens
B) Plane mirror
C) Converging lens
D) Cylindrical lens

16. A concave lens is also known as:

A) Diverging lens
B) Converging lens
C) Magnifying lens
D) Reflecting lens

17. The SI unit of focal length is:

A) Diopter
B) Hertz
C) Second
D) Meter

18. The power of a lens is measured in:

A) Watt
B) Diopter
C) Meter
D) Joule

19. The power of a lens is given by:

A) $P = \frac{1}{f}$
B) $P = f$
C) $P = 2f$
D) $P = f^2$

20. A lens having focal length $0.5\,m$ has power:

A) $0.5\,D$
B) $1\,D$
C) $1.5\,D$
D) $2\,D$

21. Which mirror is used in headlights of vehicles?

A) Convex mirror
B) Plane mirror
C) Concave mirror
D) Cylindrical mirror

22. A convex mirror always forms image which is:

A) Real and enlarged
B) Virtual and diminished
C) Real and inverted
D) Virtual and enlarged

23. The defect of vision in which distant objects are not seen clearly is:

A) Myopia
B) Hypermetropia
C) Presbyopia
D) Astigmatism

24. Myopia is corrected by using:

A) Convex lens
B) Cylindrical lens
C) Bifocal lens
D) Concave lens

25. Hypermetropia is corrected by using:

A) Concave lens
B) Convex lens
C) Plane mirror
D) Prism

26. The splitting of white light into different colors is called:

A) Reflection
B) Refraction
C) Dispersion
D) Diffraction

27. A prism produces spectrum due to:

A) Dispersion
B) Reflection
C) Interference
D) Diffraction

28. The color having maximum wavelength is:

A) Violet
B) Blue
C) Green
D) Red

29. The color having minimum wavelength is:

A) Violet
B) Red
C) Orange
D) Yellow

30. The defect caused due to aging of eye is:

A) Myopia
B) Presbyopia
C) Astigmatism
D) Cataract

31. The image formed on the retina of human eye is:

A) Virtual and erect
B) Virtual and inverted
C) Real and inverted
D) Real and erect

32. The transparent front part of eye is called:

A) Retina
B) Iris
C) Pupil
D) Cornea

33. The opening through which light enters the eye is:

A) Pupil
B) Retina
C) Cornea
D) Optic nerve

34. The function of iris is to control:

A) Color of image
B) Amount of light entering eye
C) Formation of image
D) Reflection of light

35. The screen of the human eye is called:

A) Iris
B) Cornea
C) Retina
D) Pupil

36. The blind spot is the point on retina where:

A) Optic nerve leaves the eye
B) Image is brightest
C) Light enters the eye
D) Lens is located

37. The ability of eye lens to change its focal length is called:

A) Reflection
B) Dispersion
C) Persistence
D) Accommodation

38. Which mirror is used in vehicle side mirrors?

A) Plane mirror
B) Convex mirror
C) Concave mirror
D) Cylindrical mirror

39. Which mirror is used by dentists?

A) Concave mirror
B) Convex mirror
C) Plane mirror
D) Prism

40. The unit of power of lens is:

A) Watt
B) Joule
C) Diopter
D) Meter

41. A convex mirror always forms image which is:

A) Real and enlarged
B) Real and inverted
C) Virtual and enlarged
D) Virtual and diminished

42. Which lens is used in magnifying glass?

A) Convex lens
B) Concave lens
C) Cylindrical lens
D) Plane lens

43. Light bends towards the normal when it travels from:

A) Denser to rarer medium
B) Rarer to denser medium
C) Vacuum to vacuum
D) One vacuum to another

44. The ratio of speed of light in vacuum to that in medium is called:

A) Magnification
B) Power of lens
C) Refractive index
D) Critical angle

45. A rainbow is formed due to:

A) Dispersion of light
B) Reflection only
C) Diffraction
D) Interference

46. The color at the top of rainbow is:

A) Violet
B) Blue
C) Green
D) Red

47. The SI unit of refractive index is:

A) Meter
B) No unit
C) Diopter
D) Second

48. The image formed by a concave mirror can be:

A) Real or virtual
B) Only virtual
C) Only erect
D) Only diminished

49. The focal length of a plane mirror is:

A) Infinite
B) Zero
C) Infinite practically
D) One meter

50. The splitting of white light into seven colors forms:

A) Reflection
B) Refraction
C) Interference
D) Spectrum

Leave a Comment Cancel Reply