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Important Questions and Answers for Class 8 Science Chapter 10 Light Mirrors And Lenses 2025-26

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Light Mirror and Lenses Class 8 Questions and Answers for Exam Preparation

On this page, you will find Important Questions Class 8 Science Chapter 10 Light Mirrors And Lenses along with stepwise answers. These light mirror and lenses class 8 questions and answers are based on the latest NCERT and CBSE exam patterns. The material is designed for students preparing for school exams or classroom tests.


Class 8 Science Chapter 10 explains how mirrors and lenses form images, with explanations, diagrams, and everyday examples. You also get class 8 science chapter 10 light: mirrors and lenses notes for quick revision and confidence in topics often asked in school papers.


Practice these Vedantu’s Important Questions with Answers to get comfortable with different types of questions. You can learn key points and structure your answers better. Download the free PDF of Important Questions for easy revision anytime.


Light Mirror and Lenses Class 8 Questions and Answers for Exam Preparation

1. Multiple choice questions.


Q1. When you look at your face in the inner curved surface of a spoon, the image appears:


  • (a) Erect and diminished
  • (b) Inverted and enlarged
  • (c) Inverted
  • (d) Erect and of same size

Answer: (c) Inverted


Q2. Which mirror is used as a side-view mirror on vehicles?


  • (a) Plane mirror
  • (b) Concave mirror
  • (c) Convex mirror
  • (d) None of these

Answer: (c) Convex mirror


Q3. The angle of incidence is equal to the angle of reflection. This is true for:


  • (a) Plane mirrors only
  • (b) Concave and convex mirrors only
  • (c) All mirrors
  • (d) Only lenses

Answer: (c) All mirrors


Q4. A convex lens is also called:


  • (a) Converging lens
  • (b) Diverging lens
  • (c) Plane lens
  • (d) None of these

Answer: (a) Converging lens


2. Very Short Answer (VSA).


Q5. What is the main characteristic of the image formed by a convex mirror?


Answer: The image formed by a convex mirror is always erect, diminished in size, and virtual.


Q6. Define a lens.


Answer: A lens is a transparent material with at least one curved surface that bends light rays passing through it.


Q7. State the law of reflection.


Answer: Law of reflection states that the angle of incidence equals the angle of reflection, and both rays lie in the same plane as the normal.


Q8. Give one use of a concave mirror.


Answer: Concave mirrors are used by dentists to view an enlarged image of teeth.


Q9. What type of image does a concave lens form?


Answer: A concave lens always forms an image that is diminished, erect, and virtual.


3. Short Answer Questions.


Q10. Why is there a warning written on side-view mirrors of vehicles: "Objects in mirror are closer than they appear"?


Answer: Side-view mirrors use convex mirrors, which always form diminished images. This makes objects appear smaller and hence, farther than they really are. The warning reminds drivers that vehicles seen in the mirror are actually nearer than they seem.


Q11. How can you distinguish a concave mirror from a convex mirror using their reflecting surfaces?


Answer: Place both mirrors on a table with reflecting surfaces up and observe from the side. If the reflecting surface curves inward, it's a concave mirror; if it curves outward, it's a convex mirror.


Q12. Describe the difference in the images formed by a plane mirror and a concave mirror when an object is placed close to each.


Answer: A plane mirror forms an erect image of the same size as the object. A concave mirror, when the object is close, forms an erect and enlarged image. On moving the object farther, the concave mirror forms an inverted, diminished image.


Q13. Why does a concave mirror burn paper when placed in sunlight but a plane mirror does not?


Answer: A concave mirror converges sunlight to a point, focusing intense light energy that can burn paper. A plane mirror only reflects sunlight as parallel beams; it doesn't concentrate energy at one spot.


Q14. List two uses each of convex and concave lenses in daily life.


Answer: Convex lenses are used in eyeglasses for farsightedness and in magnifying glasses. Concave lenses are used in spectacle lenses for myopia and in some cameras to spread out light rays.


Q15. What happens to an object’s image as it is moved away from a convex mirror?


Answer: As the object is moved farther from a convex mirror, its image remains erect and diminished, but the size of the image decreases slightly. The image always appears smaller than the object.


4. True or False Questions.


Q16. A convex lens always forms an enlarged and erect image regardless of object distance.


Answer: False


Q17. Plane mirrors always produce images that are laterally inverted.


Answer: True


Q18. Concave mirrors can be used for road safety at sharp turns.


Answer: False


Q19. Lenses are used in cameras and telescopes.


Answer: True


Q20. The angle of incidence and reflection are always measured with respect to the reflecting surface.


Answer: False


3. Fill in the Blanks Questions.


Q21. A concave mirror _______ parallel rays of light that fall on it.


Answer: converges


Q22. The image formed by a _______ mirror is always virtual, erect, and smaller than the object.


Answer: convex


Q23. The center point of a spherical mirror is called the _______.


Answer: pole


Q24. Convex lens is _______ at the middle than at the edges.


Answer: thicker


Q25. The human eye contains a _______ lens.


Answer: convex


Why Understanding Light, Mirrors, and Lenses Matters

Light: Mirrors and Lenses helps students discover how images are formed. Questions and answers on light mirror and lenses class 8 encourage clear thinking about reflection and refraction. These notes build strong basics for understanding class 8 science chapter 10.

Learning with our class 8 science chapter 10 light: mirrors and lenses notes and worksheets makes difficult ideas simple. Students enjoy applying knowledge with MCQs, short questions, and practical activities and improve performance using class 8 science chapter 10 question answer pdf.

Use light: mirrors and lenses class 8 pdf and interactive exercises to revise key concepts easily. These resources, including light mirror and lenses class 8 worksheet and MCQs, bring textbook knowledge alive for exams and real life. 


FAQs on Important Questions and Answers for Class 8 Science Chapter 10 Light Mirrors And Lenses 2025-26

1. What types of important questions are usually asked from Class 8 Science Chapter 10 – Light Mirrors and Lenses?

Most exams include MCQs, short answer, long answer, and diagram-based questions from this chapter. Focus on topics like image formation by mirrors and lenses, laws of reflection, and uses of concave/convex mirrors for better results. Practice a mix of these formats to prepare thoroughly.

2. How should I structure answers to score well in important questions for this chapter?

Use clear steps, include marking keywords, and label diagrams when needed. For each answer:

  • Start with a definition or statement
  • Explain or give a reason
  • Add a labelled diagram if required
Stick to CBSE's word limit and focus on value points.

3. Which subtopics from Light Mirrors and Lenses should I focus on for high-weightage important questions?

Focus on the laws of reflection, characteristics of images formed by concave and convex mirrors/lenses, and ray diagrams. These are frequently tested and often carry more marks in class 8 science chapter 10 exercise question answers.

4. Are diagrams necessary in answers for important questions from this chapter?

Yes, neat and labelled diagrams are often required for questions about image formation and ray paths. Diagrams make your answers clearer and help you score full marks. Always use a pencil, and label each part clearly as per NCERT standards.

5. Where can I find a light mirror and lenses class 8 worksheet or important questions PDF for practice?

You can get practice by solving a light mirror and lenses class 8 worksheet or downloading a free important question PDF from trusted educational platforms. Solving these helps you revise both concept-based and exam-focused questions from chapter 10.

6. What is the best way to practice for important MCQs in Class 8 Science Chapter 10?

Practice MCQs regularly from chapter-wise banks or worksheets to improve speed and confidence. Read each question carefully, underline key points, and avoid rushing. Always review the explanations for both correct and incorrect answers for complete understanding.

7. Do I need to memorize the exact textbook definitions or focus on keywords and stepwise explanations for important questions?

Focus on keywords and stepwise explanations. While textbook definitions are important, CBSE examiners give marks for relevant points, correct terminology, and logical sequences. It is better to understand and remember the concepts, not just memorize the text.