MCQ Questions for Class 10 Science Chapter 10 Light Reflection and Refraction with Answers

# Light: Reflection and Refraction Class 10 Science MCQs

The theory of light, reflection, and refraction is absolutely engaging for the Class 10 students. Cracking MCQs of Chapter 10 Light Reflection and Refraction will unfold your concept for this chapter in an effective way. You will also improve your pace, manage time efficiently and master the skills to answer questions accurately.If you are well acquainted with all the concepts, an adequate practice of MCQs is all you need to score better in the board exam. The students must mainly concentrate on MCQ Questions for Class 10 Science Chapter 10 Light Reflection and Refraction with Answers. Practicing every day is incredibly useful for students to improve their conceptual command.

## Light Reflection and Refraction Class 10 MCQs Questions with Answers

1) Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?

1. 15 cm in front of the mirror
2. 30 cm in front of the mirror
3. between 15 cm and 30 cm in front of the mirror
4. more than 30 cm in front of the mirror

2) A concave mirror of radius 30 cm is placed in water. Its the focal length in air and water differs by

1. 15
2. 20
3. 30
4. 0

3) In order to obtain a magnification of, -0.6 (minus 0.6) with a concave mirror, the object must be placed:

1. At the focus
2. Between pole and focus
3. Between focus and centre of curvature
4. Beyond the centre of curvatureÂ

4) A convex lens of power P is immersed in water. How will its power change?

1. A) Increases
2. B) Remain unchanged
3. C) Decreases
4. D) Increases for red colour and decreases for blue colourÂ

5) Convex mirror is also called

1. Converging Mirror
2. Diverging Mirror
3. Both A and B
4. NoneÂ

6) Which position of the object will produce a magnified virtual image if a concave mirror of focal length 15 cm is being used?

1. 10 cm
2. 20 cm
3. 30 cm
4. 35 cm

7) If an incident ray passes through the focus, the reflected ray will

1. pass through the pole
2. be parallel to the principal axis
3. retrace its path
4. pass through the centre of curvature

8) Focal length of the plane mirror is

1. At infinity
2. Zero
3. Negative
4. None of these

9) When a ray of light goes from one medium to another, there isÂ

1. Always a change in its speed as well as direction
2. No change in speed and direction
3. A change in speed but no change in direction
4. A change in direction but constant speed

10) What is the frequency of violet colour of wavelength 4000 A?

1. 7.5 x 1010 Hz
2. 7.5 x 1012 Hz
3. 7.5 x 1014 Hz
4. 7.5 x 1016 Hz

11) For a real object, which of the following can produce a real image?

1. Plane mirror
2. Concave mirror
3. Concave lens
4. Convex mirror

12) When the object is placed between f and 2f of a convex lens, the image formed is

1. at f
2. at 2f
3. beyond 2f
4. between O and f

13) You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at the same angle would bend the most?

1. Kerosene
2. Water
3. Mustard oil
4. Glycerine

14) The angle between an incident ray and the plane mirror is 30Â°. The total angle between the incident ray and reflected ray will be:

1. 30Â°
2. 60Â°
3. 90Â°
4. 120Â°