# MCQ Questions for Class 10 Science Chapter 10 Light- Reflection and Refraction

MCQ Questions for Class 10 Science Chapter 10 Light- Reflection and Refraction are used in exams as a way to measure a student’s knowledge and understanding of the material. These are an excellent way for students to test their knowledge and prepare for exams.

Chapter 10 Class 10 Science MCQ Questions are an efficient way to test knowledge and identify areas where revision is needed. It also give insights about your strengths and weaknesses.

## Chapter 10 Light- Reflection and Refraction Class 10 Science MCQ Questions

1. The radius of curvature of concave mirror is 12 cm. Then, the focal length will be
(a) 12 cm
(c) – 24 cm
(b) 6 cm
(d) – 6 cm
▶ (d) – 6 cm

2. The laws of reflection hold true for:
(a) plane mirrors only
(c) convex mirrors only
(b) concave mirrors only
(d) all reflecting surfaces
▶ (b) concave mirrors only

3. An object is placed 60 cm in front of a concave mirror. The real image formed by the mirror is located 30 cm in front of the mirror. What is the object’s magnification?
(a) +2
(b) -2
(c) +0.5
(d) -0.5
▶ (d) -0.5

4. The image of an object placed in front of a convex mirror is formed at
(a) the object itself
(b) twice the distance of the object in front of the mirror
(c) half the distance of the object in front of the mirror
(d) behind the mirror
▶ (d) behind the mirror

5. If an incident ray passes through the focus, the reflected ray will
(a) pass through the pole
(b) be parallel to the principal axis
(c) retrace its path
(d) pass through the centre of curvature
▶ (b) be parallel to the principal axis

6. When light falls on a smooth polished surface, most of it
(a) is reflected in the same direction
(b) is reflected in different directions
(c) is scattered
(d) is refracted into the second medium
▶ (a) is reflected in the same direction

7. Image formed by reflection from a plane mirror is
(a) real and inverted
(b) virtual and erect
(c) real and erect
(d) virtual and inverted
▶ (b) virtual and erect

8. An object is placed 40.0 cm in front of a convex mirror. The image appears 15 cm behind the mirror. What is the focal length of the mirror?
(a) +24 cm
(b) +11 cm
(c) -11 cm
(d) -24 cm
▶ (d) -24 cm

9. Light waves
(a) Require air or another gas to travel through
(b) Require an electric field to travel through
(c) Require a magnetic field to travel through
(d) Can travel through perfect vacuum
▶ (d) Can travel through perfect vacuum

10. Focal length of a plane mirror is
(a) zero
(b) infinite
(c) 25 cm
(d) -25
▶ (b) infinite

11. What will be the position and nature of the image of an object formed by a concave mirror placed between focus (f) and pole (P) of the mirror?
(a) In between pole (P) and focus (f) in front of mirror, virtual and erect
(b) In between pole (P) and focus (f) in front of mirror, virtual and inverted
(c) Behind the mirror, real and erect
(d) Behind the mirror, virtual and erect
▶ (d) Behind the mirror, virtual and erect

12. The image formed by a convex lens can be
(a) virtual and magnified
(b) virtual and diminished
(c) virtual and of same size
(d) virtual image is not formed
▶ (a) virtual and magnified

13. Magnifying power of a concave lens is
(a) always > 1
(b) always < 1
(c) always = 1
(d) can have any value
▶ (b) always < 1

14. What will be the position and nature of the image of an object formed by a convex mirror placed between infinity and pole (P) of the mirror?
(a) In between pole (P) and focus (f) behind mirror, virtual and erect
(b) In between pole (P) and focus (f) behind mirror, virtual and inverted
(c) In front of mirror, real and erect
(d) In front of mirror, virtual and erect
▶ (a) In between pole (P) and focus (f) behind mirror, virtual and erect

15. A hole is made in a convex lens, then
(a) A hole appears in the image
(b) Image size decreases
(c) Image intensity decreases
(b) Image size decreases
(d) No change
▶ (c) Image intensity decreases

16. A full length image of a distant tall building can definitely be seen by using
(a) a concave mirror
(b) a convex mirror
(c) a plane mirror
(d) both concave as well as plane mirror
▶ (b) a convex mirror

17. f = r/2 is valid
(a) For convex mirrors but not for concave mirrors
(b) For concave mirrors but not for convex mirrors
(c) For both convex and concave mirrors
(d) Neither for convex mirrors nor for concave mirrors
▶ (c) For both convex and concave mirrors

18. Two lenses of power +3 and -1 dioptres are placed in contact. The focal length of the combined lens is
(a) 100 cm
(b) 25 cm
(c) 50 cm
(d) 30.3 cm
▶ (c) 50 cm

19. Which of the given is not true of an image formed by a plane mirror?
(a) It is erect
(b) It is virtual
(c) It is diminished
(d) It is at the same distance as the object
▶ (c) It is diminished

20. If the image is formed in front of the mirror, then the image distance will be
(a) positive or negative depending on the size of the object
(b) neither positive nor negative
(c) positive
(d) negative
▶ (d) negative

21. A ray of light is travelling from a rarer medium to a denser medium. While entering the denser medium at the point of incidence, it
(a) goes straight into the second medium
(b) bends towards the normal
(c) bends away from the normal
(d) does not enter at all
▶ (b) bends towards the normal

22. If an incident ray passes through the focus, the reflected ray will
(a) pass through the pole
(b) be parallel to the principal axis
(c) retrace its path
(d) pass through the centre of curvature
▶ (b) be parallel to the principal axis

23. When light falls on a smooth polished surface, most of it
(a) is reflected in the same direction
(c) is scattered
(b) is reflected in different directions
(d) is refracted into the second medium
▶ (a) is reflected in the same direction

24. Image formed by reflection from a plane mirror is
(a) real and inverted
(b) virtual and erect
(c) real and erect
(d) virtual and inverted
▶ (b) virtual and erect

25. Focal length of a concave mirror is
(a) negative
(b) positive
(c) depends on the position of object
(d) depends on the position of image
▶ (a) negative

26. When an object moves closer to convex lens, the image formed by it shift
(a) away from the lens
(b) towards the lens
(c) first towards and then away from the lens
(d) first away and then towards the lens
▶ (a) away from the lens

27. Light from the Sun falling on a convex lens will converge at a point called
(a) centre of curvature
(b) focus
(d) optical centre
▶ (b) focus

28. When object moves closer to a concave lens, the image formed by it shift
(a) away from the lens on the same side of object
(b) towards the lens
(c) away from the lens on the other side of lens
(d) first towards and then away from the lens
▶ (b) towards the lens

29. A divergent lens will produce
(a) always real image
(b) always virtual image
(c) both real and virtual image
(d) none of these
▶ (b) always virtual image

30. The nature of image formed by a convex mirror when the object distance from the mirror is less than the distance between pole and focal point (F) of the mirror would be
(a) real, inverted and diminished in size
(b) real, inverted and enlarged in size
(c) virtual, upright and diminished in size
(d) virtual, upright and enlarged in size
▶ (c) virtual, upright and diminished in size

31. The nature of the image formed by concave mirror when the object is placed between the focus (F) and centre of curvature (C) of the mirror observed by us is
(a) real, inverted and diminished
(c) real, inverted and enlarged
(b) virtual, erect and smaller in size
(d) virtual, upright and enlarged
▶ (b) virtual, erect and smaller in size

32. Two big mirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he finds that the size of his face in mirror A goes on increasing but that in mirror B remains the same
(a) Mirror A is concave and mirror B is convex
(b) Mirror A is plane and mirror B is concave
(c) Mirror A is concave and mirror B is plane
(d) Mirror A is convex and mirror B is concave
▶ (c) Mirror A is concave and mirror B is plane