Main Menu
  • School
    • Close
    • CBSE English Medium
    • CBSE Hindi Medium
    • UP Board
    • Bihar Board
    • Maharashtra Board
    • MP Board
    • Gujarat Board
    • Close
  • English
    • Close
    • English Grammar for School
    • Basic English Grammar
    • Basic English Speaking
    • English Vocabulary
    • English Idioms & Phrases
    • Personality Enhancement
    • Interview Skills
    • Close
  • Sarkari Exam Prep
    • Close
    • All Govt Exams Preparation
    • MCQs for Competitive Exams
    • Notes For Competitive Exams
    • NCERT Syllabus for Competitive Exam
    • Close
  • Study Abroad
    • Close
    • Study in Australia
    • Study in Canada
    • Study in UK
    • Study in Germany
    • Study in USA
    • Close
Science Class 8 || Menu
  • Videos Science Class 8
  • MCQ Science Class 8
  • Notes Science Class 8
  • Question Answer Science Class 8
  • Important Question Science Class 8
  • Previous Year Papers Science Class 8
  • Sample Papers Science Class 8
  • Book Science Class 8
  • Marking Scheme Science Class 8
  • Crop Production and Management
  • Microorganisms: Friend and Foe
  • Coal and Petroleum
  • Combustion and Flame
  • Conservation of Plants and Animals
  • Reproduction in Animals
  • Force and Pressure
  • Friction
  • Sound
  • Chemical Effects of Electric Current
  • Science Class 8

Important Questions Chapter 10 Class 8 Science Curiosity CBSE Board

Advertisement

Light: Mirrors and Lenses


Short Questions

1. What is a spherical mirror?
Answer:- A mirror with a curved surface, like part of a sphere.

2.Name the two types of spherical mirrors.
Answer:- Concave and convex mirrors.

3.What is a concave mirror?
Answer:- A mirror that curves inward.

4.What is a convex mirror?
Answer:- A mirror that curves outward.

5.How does a plane mirror form an image?
Answer:- It forms an erect image of the same size as the object.

6.What kind of image does a convex mirror always form?
Answer:- An erect and diminished image.

7.What happens to the image in a concave mirror when the object moves farther away?
Answer:- The image becomes inverted and smaller.

8.What is the first law of reflection?
Answer:- The angle of incidence equals the angle of reflection.

9.What is the second law of reflection?
Answer:- The incident ray, normal, and reflected ray lie in the same plane.

10.What does a convex lens do to light beams?
Answer:- It converges light beams.

11.What does a concave lens do to light beams?
Answer:- It diverges light beams.

12.What type of lens is a magnifying glass?
Answer:- A convex lens.

13.Where are convex mirrors used in vehicles?
Answer:- As side-view mirrors.

14.What is the shape of a water drop acting as a lens?
Answer:- It has a curved surface.

15.Why do convex mirrors show objects closer than they appear?
Answer:- They form smaller images, making objects seem farther away.


Long Questions

1. How can you distinguish between a concave and convex mirror by looking at their side view?
Answer:- A concave mirror curves inward, like a cave, while a convex mirror bulges outward. You can identify them by checking the direction of the curve from the side.

2. Why do convex mirrors provide a wider view compared to plane mirrors?
Answer:- Convex mirrors curve outward, reflecting light from a larger area. This makes them ideal for seeing more of the surroundings, like in vehicle side mirrors.

3. Explain how a concave mirror is used in a torch or car headlight.
Answer:- A concave mirror reflects light from a bulb placed at its focus, converging it into a strong beam. This helps direct light forward for better illumination.

4. What happens to the image in a convex lens when the object is moved farther away?
Answer:- When the object is close, the image is erect and enlarged. As it moves farther, the image becomes inverted and may get smaller.

5. How does a water drop act as a lens, and what kind of lens is it?
Answer:- A water drop’s curved surface bends light, making objects appear larger. It acts like a convex lens due to its outward curve.

6. Why are convex mirrors used at road intersections?
Answer:- Convex mirrors provide a wide field of view, showing traffic from multiple directions. This helps drivers see around corners and avoid collisions.

7. What are the differences between images formed by concave and convex lenses?
Answer:- A concave lens always forms erect, diminished images. A convex lens can form erect or inverted images, which may be enlarged or diminished, depending on the object’s distance.

8. How can you demonstrate that light travels in a straight line using a mirror?
Answer:- Shine a beam of light through a slit onto a mirror and observe the reflected beam. The straight path of the incident and reflected beams shows light travels in a straight line.

9. Why is a concave mirror used by dentists?
Answer:- A concave mirror provides an enlarged, erect image when held close to teeth. This helps dentists see small details clearly for examination.

10. What did you learn from Activity 10.6 about the reflection of parallel beams by different mirrors?
Answer:- Plane mirrors reflect parallel beams as parallel. Concave mirrors converge them, while convex mirrors diverge them, due to their curved surfaces.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Advertisement

CBSE Delhi Question Answer of Chapters in PDF

Free Sample Papers and Previous Years' Question Papers for CBSE Exams from the Official CBSE Academic Website (CBSE.nic.in) in Delhi, Rajasthan, Uttar Pradesh and Bihar

Download CBSE / NCERT Book, Notes & MCQ Online Test / Mock Test

Online Quiz with Answers for Objective Questions in Hindi and English

Advertisement

Maharashtra Board Marathi & English Medium

Just Launched! Access Maharashtra Board Exam MCQs, Previous Year Papers, Textbooks, Solutions, Notes, Important Questions, and Summaries—available in both Marathi and English mediums—all in one place Maharashtra Board

Android APP

सरकारी Exam Preparation

Sarkari Exam Preparation Youtube

CBSE – दिल्ली, उत्तर प्रदेश, मध्य प्रदेश, बिहार, राजस्थान & हरियाणा Board हिंदी माध्यम

कक्षा 6 to 8 हिंदी माध्यम
कक्षा 9 & 10 हिंदी माध्यम
कक्षा 11 हिंदी माध्यम

State Board

यूपी बोर्ड 6,7 & 8
बिहार बोर्ड हिंदी माध्यम

CBSE Board

Mathematics Class 6
Science Class 6
Social Science Class 6
हिन्दी Class 6
सामाजिक विज्ञान कक्षा 6
विज्ञान कक्षा 6

Mathematics Class 7
Science Class 7
SST Class 7
सामाजिक विज्ञान कक्षा 7
हिन्दी Class 7

Mathematics Class 8
Science Class 8
Social Science Class 8
हिन्दी Class 8

Mathematics Class 9
Science Class 9
English Class 9

Mathematics Class 10
SST Class 10
English Class 10

Mathematics Class XI
Chemistry Class XI
Accountancy Class 11

Accountancy Class 12
Mathematics Class 12

Learn English
English Through हिन्दी
Job Interview Skills
English Grammar
हिंदी व्याकरण - Vyakaran
Microsoft Word
Microsoft PowerPoint
Adobe PhotoShop
Adobe Illustrator
Learn German
Learn French
IIT JEE

CBSE Board English Medium

  • Class 6 CBSE Board
  • Class 7 CBSE Board
  • Class 8 CBSE Board
  • Class 9 CBSE Board
  • Class 10 CBSE Board
  • Class 11 CBSE Board
  • Class 12 CBSE Board
  • CBSE Board Hindi Medium

  • Class 6 CBSE Board
  • Class 7 CBSE Board
  • Class 8 CBSE Board
  • Class 9 CBSE Board
  • Class 10 CBSE Board
  • Class 11 CBSE Board
  • Class 12 CBSE Board
  • बिहार बोर्ड
  • Class 6 Bihar Board
  • Class 7 Bihar Board
  • Class 8 Bihar Board
  • Class 9 Bihar Board
  • Class 10 Bihar Board
  • Class 11 Bihar Board
  • Class 12 Bihar Board
  • उत्तर प्रदेश बोर्ड
  • Class 6 UP Board
  • Class 7 UP Board
  • Class 8 UP Board
  • Class 9 UP Board
  • Class 10 UP Board
  • Class 11 UP Board
  • Class 12 UP Board
  • महाराष्ट्र बोर्ड
  • Class 6 Maharashtra Board
  • Class 7 Maharashtra Board
  • Class 8 Maharashtra Board
  • Class 9 Maharashtra Board
  • Class 10 Maharashtra Board
  • Class 11 Maharashtra Board
  • Class 12 Maharashtra Board
  • मध्य प्रदेश बोर्ड
  • Class 6 MP Board
  • Class 7 MP Board
  • Class 8 MP Board
  • Class 9 MP Board
  • Class 10 MP Board
  • Class 11 MP Board
  • Class 12 MP Board

ગુજરાત બોર્ડ

  • Class 6 Gujarat Board
  • Class 7 Gujarat Board
  • Class 8 Gujarat Board
  • Class 9 Gujarat Board
  • Class 10 Gujarat Board
  • Class 11 Gujarat Board
  • Class 12 Gujarat Board

PSC Exam Preparation

  • Uttar Pradesh PSC Exam Preparation (UPPSC)
  • Bihar PSC Exam Preparation (BPSC)
  • Madhya Pradesh PSC Exam Preparation (MPPSC)
  • Rajasthan PSC Exam Preparation (RPSC)
  • Maharashtra PSC Exam Preparation (MPSC)
Privacy Policies, Terms and Conditions, About Us, Contact Us
Copyright © 2025 eVidyarthi and its licensors. All Rights Reserved.