Learn about Important MCQs for Chapter 10-Light: Mirrors and Lenses in Class VIII Subject Science
Multiple Choice Questions:
1. Which mirror has a reflecting surface that curves inwards?
(a) Plane mirror
(b) Convex mirror
(c) Concave mirror
(d) Cylindrical mirror
2. The reflecting surface of a convex mirror is curved:
(a) Inwards
(b) Outwards
(c) Flat
(d) Both sides
3. The mirror used by dentists to see enlarged images of teeth is a:
(a) Concave mirror
(b) Convex mirror
(c) Plane mirror
(d) Cylindrical mirror
4. Side-view mirrors of vehicles are:
(a) Concave
(b) Convex
(c) Plane
(d) Parabolic
5. A plane mirror always forms an image that is:
(a) Inverted
(b) Diminished
(c) Erect and same size
(d) Enlarged
6. The image formed by a convex mirror is always:
(a) Erect and diminished
(b) Inverted
(c) Same size
(d) Enlarged
7. The image formed by a concave mirror depends on:
(a) Color of the object
(b) Shape of the mirror
(c) Distance of object
(d) Light intensity
8. Which mirror provides a wider view of traffic behind a vehicle?
(a) Plane
(b) Convex
(c) Concave
(d) Cylindrical
9. The angle between the normal and incident ray is called:
(a) Angle of incidence
(b) Angle of reflection
(c) Angle of deviation
(d) Refracted angle
10. The angle between the normal and reflected ray is called:
(a) Angle of incidence
(b) Angle of reflection
(c) Refraction angle
(d) Right angle
11. The law of reflection states that:
(a) Angle of incidence > Angle of reflection
(b) Both angles are unequal
(c) Angle of incidence = Angle of reflection
(d) Angle of reflection is always 90°
12. The incident ray, normal and reflected ray all lie:
(a) In different planes
(b) In same plane
(c) Perpendicular planes
(d) At right angles
More:
13. Which mirror converges light rays after reflection?
(a) Concave mirror
(b) Convex mirror
(c) Plane mirror
(d) None
14. Which mirror diverges light rays after reflection?
(a) Plane
(b) Convex
(c) Concave
(d) Parabolic
15. The bright spot formed on paper using a concave mirror is due to:
(a) Divergence of sunlight
(b) Dispersion
(c) Convergence of sunlight
(d) Refraction
16. Devices that use concave mirrors to focus sunlight are called:
(a) Solar concentrators
(b) Solar panels
(c) Solar cells
(d) Solar heaters
17. A lens which is thicker at the middle is called:
(a) Concave lens
(b) Convex lens
(c) Plane lens
(d) Cylindrical lens
18. A lens thicker at the edges and thinner in the middle is:
(a) Concave lens
(b) Convex lens
(c) Plane glass
(d) Biconvex lens
19. A convex lens acts as a:
(a) Diverging lens
(b) Converging lens
(c) Reflecting lens
(d) Neutral lens
20. A concave lens acts as a:
(a) Converging lens
(b) Neutral lens
(c) Diverging lens
(d) Reflecting lens
21. A magnifying glass uses which type of lens?
(a) Convex
(b) Concave
(c) Cylindrical
(d) Plane
22. The image formed by a concave lens is always:
(a) Inverted
(b) Erect and diminished
(c) Enlarged
(d) Real
23. Which device contains a convex lens?
(a) Mirror
(b) Periscope
(c) Microscope
(d) Telescope
24. The lens inside the human eye is:
(a) Convex
(b) Concave
(c) Plane
(d) Cylindrical
25. The laws of reflection apply to:
(a) Only plane mirrors
(b) Plane, concave, and convex mirrors
(c) Only convex mirrors
(d) Only concave mirrors
Answer Key – MCQs
1. (c) 2. (b) 3. (a) 4. (b) 5. (c) 6. (a) 7. (c) 8. (b) 9. (a) 10. (b)
11. (c) 12. (b) 13. (a) 14. (b) 15. (c) 16. (a) 17. (b) 18. (a) 19. (b) 20. (c)
21.(a) 22. (b) 23. (c) 24. (a) 25. (b)
Fill in the Blanks:
1. The ray of light that falls on the mirror is called the ____________.
2. The ray that comes back after reflection is called the ____________.
3. The angle between the normal and incident ray is known as ____________.
4. According to the law of reflection, the angle of incidence is ____________ to the angle of reflection.
5. A ____________ mirror converges light rays.
6. A ____________ mirror always forms an erect and diminished image.
7. A ____________ is a transparent material with curved surfaces.
8. A convex lens is also called a ____________ lens.
9. The lens present in the human eye is ____________ in shape.
10. ____________ mirrors form images of the same size as the object.
Answers –
1. Incident ray 2. Reflected ray
3. Angle of incidence 4. Equal
5. Concave 6. Convex
7. Lens 8. Converging
9. Convex 10. Plane
True or False:
1. A convex mirror can form an enlarged image. — False
2. A concave mirror can form both erect and inverted images. — True
3. Lenses allow light to pass through them. — True
4. The angle of reflection is always smaller than the angle of incidence. — False
5. Convex lenses converge light rays. — True
6. Concave lenses can burn paper by focusing sunlight. — False
7. Plane mirrors always produce laterally inverted images. — True
8. The normal is drawn at 45° to the mirror surface. — False
9. A convex mirror provides a smaller, wider view of objects behind. — True
10. The human eye has a concave lens. — False
To Learn more Click Below:
MCQs:
Chapter 1- Exploring the Investigative World of Science – CLICK HERE
Chapter 2- The Invisible Living World: Beyond Our Naked Eye – CLICK HERE
Chapter 3- Health: The Ultimate Treasure – CLICK HERE
Chapter 4-Electricity: Magnetic and Heating Effects – CLICK HERE
Chapter 5- Exploring Forces – CLICK HERE
Chapter 6- Pressure, Winds, Storms, and Cyclones – CLICK HERE