Light: Reflection and Refraction

Light: Reflection and Refraction

1. Differentiate between virtual image formed by a concave mirror and a convex mirror. Answer : The virtual image fo...

1. Answer the following questions: (i) What do you mean by reflection of light? (ii) Which surface of a plane mirror ref...

2. Answer the following questions: (i) Define: (a) Focus of a concave mirror, (b) Focus of a convex mirror. (ii) Name th...

3. Answer the following questions: (i) Define the principal focus of a convex lens. (ii) What is absolute refractive ind...

4. Answer the following questions: i) What is an optical medium? (a) an optically denser medium? (b) an optically rarer...

5. Define the following terms related to spherical mirrors: (i) Centre of curvature (ii) Pole (iii) Aperture Answer...

6. Answer the following questions: (i) What do you mean by refraction of light? (ii) What is the cause of refraction of...

7. Answer the following questions: (i) What is a spherical mirror? (ii) Name two types of spherical mirrors. (iii) Defin...

8. A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the penci...

9. Answer the following questions: (i) What is a lens? (ii) Define optical centre of a thin lens. (iii) Name the lens th...

10. A convex lens of focal length 20 cm can produce a magnified virtual as well as real image. Is this a correct stateme...

11. Answer the following questions: (i) State the two laws of refraction of light. (ii) A light ray is incident normally...

12. Answer the following questions : (i) What is relative refractive index? (ii) Define one dioptre of power of a lens....

13. Why does a light ray incident on a rectangular glass slab immersed in any medium emerges parallel to itself? Explain...

14. Differentiate between a concave mirror and a convex mirror. Answer :...

15. Differentiate between a real image and a virtual image. Answer :...

16. Differentiate between a luminous and non-luminous source of light. Answer :...

Page 142 1. Define the principal focus of a concave mirror. The principal focus of a concave mirror is t...

Page 145 1. Find the focal length of a convex mirror whose radius of curvature is 32 cm. The fo...

Page 150 1. A ray of light travelling in air enters obliquely into water. Does the light ray bend towards th...

Page 158 1. Define 1 dioptre of power of a lens. 1 dioptre (D) is the power of a lens whose foc...

Pages 159-160 (Exercises) 1. Which one of the following materials cannot be used to make a lens?...

Page 160 (Exercises) 8. Name the type of mirror used in the following situations: (a) Headlight...

Page 160 (Exercises) 13. The magnification produced by a plane mirror is +1. What does this mean?...