Chapter 9 of class 10 science as per the NCERT syllabus is Light–Reflection and Refraction which deals with the Reflection of Light, Spherical Mirrors, Image Formation by Spherical Mirrors, Refraction of Light, Laws of Refraction, Refraction through a Rectangular Glass Slab, Refraction by Spherical Lenses, Image Formation by Lenses, etc.
Here, we have discussed 30 Multiple Choice Questions based on these topics of the chapter. These questions will help you to learn more about the chapter.
For each question below, there are four options out of which only one option is correct. The correct answer to each question is given at the end for your reference.
MCQ on Class 10 Science Chapter 9
1. When light rays bounce back from a surface, it is known as:
A) Diffraction
B) Reflection
C) Refraction
D) Dispersion
2. Which of the following laws states that the angle of incidence is equal to the angle of reflection?
A) Newton’s law
B) Huygens’ principle
C) Snell’s law
D) Law of reflection
3. The type of reflection that occurs from a smooth surface is called:
A) Diffuse reflection
B) Regular reflection
C) Refracted reflection
D) Irregular reflection
4. Which of the following mirrors forms a virtual, erect, and diminished image?
A) Convex mirror
B) Concave mirror
C) Plane mirror
D) Spherical mirror
5. The image formed by a plane mirror is:
A) Real and inverted
B) Virtual and erect
C) Virtual and inverted
D) Real and erect
6. Concave mirrors are used in:
A) Torchlights
B) Rearview mirrors
C) Makeup mirrors
D) Headlights of vehicles
7. The point where the incident rays converge or appear to converge after reflection from a concave mirror is called:
A) Focus
B) Pole
C) Center of curvature
D) Principal axis
8. Which type of mirror forms an image that is always virtual, erect, and larger than the object?
A) Convex mirror
B) Concave mirror
C) Plane mirror
D) Spherical mirror
9. When light passes from a rarer medium to a denser medium, it:
A) Bends towards the normal
B) Bends away from the normal
C) Does not bend
D) Changes color
10. The bending of light when it passes through a prism is an example of:
A) Reflection
B) Diffraction
C) Refraction
D) Dispersion
11. The phenomenon of bending of light when it passes from air to water is known as:
A) Dispersion
B) Reflection
C) Refraction
D) Diffraction
12. Which of the following laws of refraction is based on the concept of the ratio of sines of the angles of incidence and refraction?
A) Newton’s law
B) Huygens’ principle
C) Snell’s law
D) Law of reflection
13. When a ray of light passes through a glass slab, it bends:
A) Towards the thicker part
B) Towards the thinner part
C) Away from the thicker part
D) Perpendicular to the surface
14. The lateral displacement of a ray of light when it passes through a rectangular glass slab is due to:
A) Refraction
B) Reflection
C) Dispersion
D) Diffraction
15. Convex lenses are used in:
A) Microscopes
B) Magnifying glasses
C) Cameras
D) All of the above
16. The point where the incident rays converge or appear to converge after passing through a convex lens is called:
A) Pole
B) Focus
C) Principal axis
D) Optical center
17. Which type of lens forms a virtual, erect, and diminished image?
A) Convex lens
B) Concave lens
C) Biconcave lens
D) Biconvex lens
18. The image formed by a convex lens when the object is placed beyond 2F is:
A) Real, inverted, and smaller
B) Virtual, erect, and smaller
C) Real, inverted, and larger
D) Virtual, erect, and larger
19. The phenomenon of dispersion occurs due to:
A) Reflection
B) Refraction
C) Diffraction
D) Polarization
20. When white light passes through a prism, it splits into its constituent colors. This phenomenon is known as:
A) Dispersion
B) Reflection
C) Refraction
D) Diffraction
21. The colors of the spectrum from the highest to the lowest frequency are:
A) Violet, blue, green, yellow, orange, red
B) Red, orange, yellow, green, blue, violet
C) Violet, indigo, blue, green, yellow, orange, red
D) Red, violet, blue, green, yellow, orange
22. The speed of light is maximum in:
A) Glass
B) Vacuum
C) Water
D) Air
23. The refractive index of a medium is defined as the ratio of the speed of light in:
A) Vacuum to the speed of light in the medium
B) The medium to the speed of light in vacuum
C) Water to the speed of light in the medium
D) Air to the speed of light in the medium
24. The critical angle for a transparent medium is the angle of incidence for which the angle of refraction is:
A) 90 degrees
B) 45 degrees
C) 180 degrees
D) 0 degrees
25. Total internal reflection occurs when:
A) Light passes from a denser medium to a rarer medium
B) Light passes from a rarer medium to a denser medium
C) The angle of incidence is less than the critical angle
D) The angle of incidence is greater than the critical angle
26. Mirage is an example of:
A) Total internal reflection
B) Refraction of light
C) Dispersion of light
D) Polarization of light
27. A concave mirror has a focal length of 10 cm. Where should the object be placed to form a real, inverted, and magnified image?
A) At 5 cm from the mirror
B) At 10 cm from the mirror
C) Beyond 10 cm from the mirror
D) Between 5 cm and 10 cm from the mirror
28. A convex lens has a focal length of 20 cm. Where should the object be placed to form a virtual, erect, and diminished image?
A) At 20 cm from the lens
B) Beyond 20 cm from the lens
C) At 10 cm from the lens
D) Between 10 cm and 20 cm from the lens
29. When a ray of light passes from air to glass, which of the following statements is true?
A) The speed of light decreases
B) The wavelength of light decreases
C) The angle of refraction increases
D) The angle of incidence decreases
30. The focal length of a concave lens is:
A) Positive
B) Negative
C) Zero
D) Cannot be determined
Correct Answers
Here is the list of correct answers to the above questions.
- B) Reflection
- D) Law of reflection
- B) Regular reflection
- A) Convex mirror
- B) Virtual and erect
- D) Headlights of vehicles
- A) Focus
- A) Convex mirror
- A) Bends towards the normal
- C) Refraction
- C) Refraction
- C) Snell’s law
- A) Towards the thicker part
- A) Refraction
- D) All of the above
- B) Focus
- B) Concave lens
- D) Virtual, erect, and larger
- B) Refraction
- A) Dispersion
- C) Violet, indigo, blue, green, yellow, orange, red
- B) Vacuum
- A) Vacuum to the speed of light in the medium
- A) 90 degrees
- D) The angle of incidence is greater than the critical angle
- A) Total internal reflection
- C) Beyond 10 cm from the mirror
- B) Beyond 20 cm from the lens
- A) The speed of light decreases
- B) Negative
The Bottom Line
I hope these 30 MCQs on Light–Reflection and Refraction of Class 10 Science Chapter 9 have helped you in your studies and preparation.
If you have any queries, or comments or find any mistake in the above questions, feel free to contact me in the comment section below.
I would love to hear from you.
Abdur Rohman is an Electrical Engineer from Charaideo, Assam, who wears multiple hats as a part-time teacher, blogger, entrepreneur, and digital marketer. Passionate about education, he founded The Assam School blog to provide free, comprehensive textbook solutions, MCQs (Multiple Choice Questions), and other academic content for students from Class V to XII.