WILLER ACADEMY

Class 10 Science Chapter 10 Quiz

Light – Reflection and Refraction

1. The laws of reflection hold true for:
a) Plane mirrors only b) Concave mirrors only c) Convex mirrors only d) All reflecting surfaces

2. The angle of incidence for a light ray having zero reflection angle is:
a) 180 degrees b) 90 degrees c) 0 degree d) 45 degrees

3. Which of the following is an example of refraction?
a) Formation of image by a plane mirror b) Bending of pencil in water c) Echo d) Shadow formation

4. The point where rays parallel to the principal axis meet after refraction by a convex lens is called:
a) Optical center b) Focus c) Center of curvature d) Pole

5. The absolute refractive index of water is:
a) 1.33 b) 1.0 c) 1.523 d) 2.45

6. State the two laws of reflection of light. (2 marks)

7. Define refractive index. (2 marks)

8. What is meant by real and virtual images? Give one example of each. (3 marks)

9. Draw a ray diagram to show the formation of image by a concave mirror when the object is placed between pole and focus. (3 marks)

10.
a) State the mirror formula and explain the terms.
b) An object is placed at a distance of 30 cm from a concave mirror of focal length 20 cm. Find the position and nature of the image. (5 marks)

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