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CBSE Class 10 Science Chapter 9 Light Reflection and Refraction MCQs
By Ankit Gupta
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Updated on 29 Aug 2025, 13:26 IST
Chapter 9 of Class 10 Science, Light – Reflection and Refraction, is one of the most important chapters for exam preparation. It helps students understand how light behaves when it strikes different surfaces or passes through different media. Practicing light class 10 mcq is an effective way to strengthen these concepts and improve problem-solving skills for board exams. Multiple-choice questions also allow quick revision of the main ideas such as mirrors, lenses, refraction, reflection, and image formation.
When students solve light reflection and refraction class 10 mcq, they become more confident in applying scientific laws like the laws of reflection and Snell’s law. These MCQs also cover topics like concave and convex mirrors, real and virtual images, power of a lens, and practical uses of optical instruments. Attempting a variety of light mcq class 10 ensures that learners can answer both direct and application-based questions in their exams.
The aim of practicing class 10 light mcq is not only to test memory but also to build a deeper understanding of how light works in real life. For example, MCQs may ask about why a rear-view mirror in vehicles is convex, or how a concave lens helps in correcting myopia. Such mcq on light class 10 encourage students to think logically and apply their knowledge beyond the textbook.
Having access to light class 10 mcq with answers is highly beneficial because students can check their responses immediately and learn from mistakes. This makes self-study more effective and helps in identifying weak areas quickly. Practicing a large number of mcq of light class 10 also reduces exam stress and increases accuracy during the actual test.
The set of mcq light class 10 provided here includes both simple and higher-order thinking questions. They are designed to cover all important points from the chapter, such as the speed of light in different media, image formation by spherical mirrors, uses of convex and concave lenses, and natural phenomena like the formation of a rainbow. By practicing light reflection and refraction mcq, students gain clarity in concepts while also improving their time management skills.
Class 10 Light Reflection and Refraction MCQs
Q1. Which of the following is true about light?
A) Light travels faster in air than in water.
B) Light cannot be refracted.
C) Light always travels in straight lines.
D) Light travels independently of the medium through which it passes.
Answer: C) Light always travels in straight lines.
Q2. What occurs to light as it transitions from air to glass?
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A) It speeds up.
B) It slows down.
C) It reflects completely.
D) It disappears.
Answer: B) It slows down.
Q3. Which of the following objects emits its own light??
A) Moon
B) Book
C) Chair
D) Mirror
Answer: A) Moon
Q4. If a ray of light strikes a surface at 45 degrees, what is the angle of incidence?
A) 90 degrees
B) 45 degrees
C) 180 degrees
D) 0 degrees
Answer: B) 45 degrees
Q5. Which type of mirror always forms a virtual, upright, and diminished image?
A) Concave mirror
B) Convex mirror
C) Plane mirror
D) Spherical mirror
Answer: C) Plane mirror
Q6. What happens to the speed of light when it travels from a rarer medium to a denser medium?
A) It increases
B) It decreases
C) It remains the same
D) It becomes unpredictable
Answer: B) It decreases
Q7. Which of the following is an example of diffuse reflection?
A) Reflection from a polished mirror
B) Reflection from a smooth surface
C) Reflection from a rough surface
D) Reflection from a concave mirror
Answer: C) Reflection from a rough surface
Q8. What lens is used to correct farsightedness or hyperopia?
A) Concave lens
B) Convex lens
C) Bifocal lens
D) Cylindrical lens
Answer: B) Convex lens
Q9. What unit is used to measure the power of a lens?
A) Diopter
B) Meter
C) Kilogram
D) Newton
Answer: A) Diopter
Q10. What is the angle of refraction if a ray of light passes from water into air at an angle of 30 degrees and the angle of incidence is 45 degrees?
A) 30 degrees
B) 45 degrees
C) 60 degrees
D) 90 degrees
Answer: C) 60 degrees
Light MCQ Class 10
Q1. In which medium does light travel fastest?
A) Air
B) Water
C) Glass
D) Diamond
Answer: A) Air
Q2. When light passes from air into a denser medium, which phenomenon occurs?
A) Total internal reflection
B) Diffuse reflection
C) Refraction
D) Dispersion
Answer: C) Refraction
Q3. What is the accurate statement regarding concave mirrors?
A) They consistently generate virtual, upright, and magnified images.
B) They consistently produce real, inverted, and diminished images.
C) When the object is positioned beyond the focus, they yield virtual, upright, and diminished images.
D) When the object is situated between the mirror and its focus, they produce real, inverted, and magnified images.
Answer: D) When the object is placed between the mirror and its focus, they produce real, inverted, and magnified images.
Q4. Which phenomenon is responsible for the formation of a rainbow:
A) Diffraction
B) Dispersion
C) Reflection
D) Refraction
Answer: B) Dispersion
Q5. A lens with a focal length of 10 cm is used to form an image of an object placed 15 cm in front of it. What type of lens is it and what is the nature of the image formed?
A) Convex lens, virtual and erect
B) Convex lens, real and inverted
C) Concave lens, real and inverted
D) Concave lens, virtual and erect
Answer: B) Convex lens, real and inverted
Q6. Which of the following phenomena does not involve the bending of light?
A) Formation of shadows
B) Dispersion of light
C) Formation of images by mirrors
D) Formation of images by lenses
Answer: A) Formation of shadows
Q7. The speed of light in a vacuum is approximately:
A) 3 × 10^8 m/s
B) 3 × 10^7 m/s
C) 3 × 10^6 m/s
D) 3 × 10^5 m/s
Answer: A) 3 × 10^8 m/s
Q8. What type of lens is utilized to rectify myopia or nearsightedness?
A) Convex lens
B) Concave lens
C) Bifocal lens
D) Cylindrical lens
Answer: B) Concave lens
Q9. When an object is placed at the center of curvature of a concave mirror, the image formed is:
A) Virtual, erect, and magnified
B) Virtual, erect, and diminished
C) Real, inverted, and magnified
D) Real, inverted, and diminished
Answer: D) Real, inverted, and diminished
Q10. What is the main reason behind the sky appearing blue during the daytime?
A) Diffraction
B) Dispersion
C) Rayleigh scattering
D) Total internal reflection
Answer: C) Rayleigh scattering
Do Check: CBSE Class 10 Science MCQs 2025-26
Light Reflection and Refraction Class 10 MCQ
Q1. The bending of light when it goes from one medium to another is called:
A) Reflection
B) Refraction
C) Dispersion
D) Scattering
Answer: B) Refraction
Q2. Which type of image is always formed by a plane mirror?
A) Real and inverted
B) Virtual and erect
C) Real and erect
D) Virtual and inverted
Answer: B) Virtual and erect
Q3. The inner surface of a spoon acts like a:
A) Plane mirror
B) Concave mirror
C) Convex mirror
D) Lens
Answer: B) Concave mirror
Q4. The outer surface of a spoon acts like a:
A) Concave mirror
B) Convex mirror
C) Plane mirror
D) Prism
Answer: B) Convex mirror
Q5. Which mirror is used as a rear-view mirror in vehicles?
A) Plane mirror
B) Concave mirror
C) Convex mirror
D) Spherical mirror
Answer: C) Convex mirror
Q6. Which lens can form both real and virtual images?
A) Concave lens
B) Convex lens
C) Plane lens
D) None of these
Answer: B) Convex lens
Q7. If the focal length of a lens is 20 cm, what is its power?
A) 20 D
B) 5 D
C) 0.2 D
D) 2 D
Answer: D) 2 D
Q8. When light passes through a glass slab, it:
A) Bends once
B) Bends twice and emerges parallel
C) Goes straight without bending
D) Disappears
Answer: B) Bends twice and emerges parallel
Q9. Which device uses a concave mirror to concentrate light?
A) Torch
B) Solar cooker
C) Streetlight
D) Periscope
Answer: B) Solar cooker
Q10. The image formed on the retina of the human eye is:
A) Real and inverted
B) Virtual and erect
C) Real and erect
D) Virtual and inverted
Answer: A) Real and inverted
Q11. A concave mirror is used by dentists because it forms:
A) Small and inverted images
B) Large and erect images
C) Diminished images
D) Parallel rays
Answer: B) Large and erect images
Q12. Which lens is used in a magnifying glass?
A) Concave lens
B) Convex lens
C) Cylindrical lens
D) Plane lens
Answer: B) Convex lens
Q13. The focal length of a concave mirror is always taken as:
A) Positive
B) Negative
C) Zero
D) Depends on position of object
Answer: B) Negative
Q14. What happens to a ray of light if it passes through the optical center of a lens?
A) It bends sharply
B) It gets reflected
C) It passes undeviated
D) It disappears
Answer: C) It passes undeviated
Q15. Which phenomenon explains the twinkling of stars?
A) Reflection
B) Refraction
C) Dispersion
D) Scattering
Answer: B) Refraction
Do Check: CBSE Class 10 MCQs Subject Wise 2025-26
Q16. The refractive index of a medium depends on:
A) Speed of light in that medium
B) Colour of light
C) Both A and B
D) None of these
Answer: C) Both A and B
Q17. Which mirror is used in headlights of vehicles?
A) Convex mirror
B) Concave mirror
C) Plane mirror
D) None of these
Answer: B) Concave mirror
Q18. Which lens always forms a virtual, erect, and diminished image?
A) Concave lens
B) Convex lens
C) Cylindrical lens
D) Plane lens
Answer: A) Concave lens
Q19. What is the SI unit of focal length?
A) Meter
B) Centimeter
C) Diopter
D) Second
Answer: A) Meter
Q20. A rainbow is formed because of which two main phenomena?
A) Reflection and diffraction
B) Refraction and dispersion
C) Scattering and reflection
D) Refraction and total internal reflection
Answer: B) Refraction and dispersion
FAQs on Light Class 10 MCQ
Why should I practice Light Reflection and Refraction Class 10 MCQs?
Practicing light class 10 mcq helps you revise important concepts like reflection, refraction, mirrors, and lenses in a short time. It improves accuracy, boosts confidence, and prepares you for both board exams and competitive exams.
Are the MCQs in Chapter 10 only factual or also application-based?
The mcq on light class 10 includes both direct fact-based questions and application-based ones. Some ask definitions or laws, while others test how well you can apply the concepts of light in real-life situations such as the working of mirrors, lenses, and optical devices.
How do Light Class 10 MCQs with answers help in self-study?
When you solve light class 10 mcq with answers, you can instantly check your performance. This helps in identifying mistakes quickly and allows you to correct your understanding before exams.
Which topics are most important for Class 10 Light Reflection and Refraction MCQs?
Some key topics for class 10 light reflection and refraction mcq include laws of reflection, refraction of light, image formation by concave and convex mirrors, uses of lenses, refractive index, power of a lens, and natural phenomena like rainbow formation.
Can solving MCQs improve my performance in board exams?
Yes. Practicing mcq light class 10 regularly sharpens your problem-solving speed and ensures you remember key formulas and concepts. It also prepares you for the objective-type questions that may appear in exams.