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Class 8 Exam > Class 8 Notes > Science Curiosity Class 8 - New NCERT > Very Short Answer Questions- Light: Mirrors and Lenses

Very Short Answer Questions- Light: Mirrors and Lenses | Science Curiosity Class 8 - New NCERT PDF Download

Q1. What type of mirror is the inner side of a spoon?
Ans: The inner side of a spoon is a concave mirror.

Q2. What type of mirror is the outer side of a spoon?
Ans: The outer side of a spoon is a convex mirror.

Q3. Define a spherical mirror.
Ans: A spherical mirror is a mirror whose reflecting surface is a part of a hollow sphere.

Q4. In a concave mirror, is the center curved inward or outward?
Ans: In a concave mirror, the center is curved inward.

Q5. In which type of mirror is the reflecting surface curved outward?
Ans: In a convex mirror, the reflecting surface is curved outward.

Q6. What is placed on the glass surface to make a mirror reflective?
Ans: A thin reflective coating like aluminum is placed on the glass surface.

Q7. How does a concave mirror form an image when the object is very close?
Ans: A concave mirror forms an erect and enlarged image when the object is very close.

Q8. How does the image in a convex mirror appear at any distance?
Ans: In a convex mirror, the image is always erect and smaller than the object.

Q9. What type of image does a plane mirror always form?
Ans: A plane mirror always forms an erect image of the same size as the object.

Q10. What is lateral inversion?
Ans: Lateral inversion is the left-right reversal of an image in a mirror.

Q11. Which mirror is used as a reflector in torches and headlights?
Ans: A concave mirror is used as a reflector in torches and headlights.

Q12. Why is a convex mirror used as a vehicle’s side-view mirror?
Ans: A convex mirror gives a wider view and forms smaller, erect images.

Q13. What type of mirror is used in modern telescopes?
Ans: Modern telescopes use a large concave mirror.

Q14. What is the First Law of Reflection?
Ans: The First Law of Reflection states that the angle of incidence equals the angle of reflection.

Q15. What is the Second Law of Reflection?
Ans: The Second Law of Reflection states that the incident ray, normal, and reflected ray all lie in the same plane.

Q16. Name the type of mirror that converges parallel light rays.
Ans: A concave mirror converges parallel light rays.

Q17. Why can a concave mirror burn paper in sunlight?
Ans: A concave mirror focuses sunlight to a small point, increasing heat enough to burn paper.

Q18. What is a lens made of?
Ans: A lens is made of transparent material like glass or plastic.

Q19. Which lens is thicker in the middle than at the edges?
Ans: A convex lens is thicker in the middle than at the edges.

Q20. Which lens is thicker at the edges than in the middle?
Ans: A concave lens is thicker at the edges than in the middle.

Q21. How does a convex lens change an image when the object is very close?
Ans: A convex lens forms an erect and enlarged image when the object is very close.

Q22. How does a concave lens form an image at any distance?
Ans: A concave lens always forms an erect and smaller image than the object.

Q23. What type of lens is called a converging lens?
Ans: A convex lens is called a converging lens.

Q24. What type of lens is called a diverging lens?
Ans: A concave lens is called a diverging lens.

Q25. Which part of the human eye acts as a convex lens?
Ans: The eye’s natural crystalline lens acts as a convex lens.

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FAQs on Very Short Answer Questions- Light: Mirrors and Lenses - Science Curiosity Class 8 - New NCERT

1. What is the difference between concave and convex mirrors?

Ans. Concave mirrors curve inward and can focus light to a point, making them useful for applications like shaving mirrors and telescopes. Convex mirrors curve outward, causing light to diverge, which provides a wider field of view and is often used for security and vehicle side mirrors.

2. How do lenses refract light?

Ans. Lenses refract light by bending it as it passes through their curved surfaces. Convex lenses converge light rays to a focal point, while concave lenses diverge them. This property is used in glasses, cameras, and microscopes to magnify images or correct vision.

3. What are the applications of mirrors and lenses in daily life?

Ans. Mirrors and lenses are used in various everyday items, such as car side mirrors, bathroom mirrors, glasses, cameras, projectors, and microscopes. They play essential roles in enhancing vision, capturing images, and allowing us to see our reflection.

4. What is the law of reflection?

Ans. The law of reflection states that the angle of incidence is equal to the angle of reflection. This means that when light hits a reflective surface, it bounces off at the same angle at which it arrived, which is fundamental to understanding how mirrors work.

5. How does the focal length of a lens affect its magnification?

Ans. The focal length of a lens determines how much it can magnify an object. A shorter focal length results in greater magnification, allowing for closer viewing of small details, while a longer focal length produces less magnification, suitable for viewing distant objects.

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Oct 09, 2025 Last updated

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