World Full of Questions

This world is full of questions and we will try to answer a few of them.

LIGHT-REFLECTION AND REFRACTION

Q1. What is light?

Q2.What is different types of objects?

Q3. How do we see objects?

Q4. What is importance of light?

Q5. Give the characteristics or nature of light?

Q6. What is rectilinear propagation of light? Give some consequences of it.

Q7. Give some important term in relation with light.

Q8. State the laws of reflection of light.

Q9. What happens when a ray of light falls normally on the surface of a mirror?

Q10. Give the characteristics of an image formed by a plane mirror.

Q11. What is Lateral Inversion?

Q12. Distinguish between real image and virtual image.

Q13.Explain the terms associated with spherical mirrors.

Q14. Describe an activity to find the appropriate value of focal length of a spherical mirror. (Concave Mirror).

Q15. Hold the concave mirror with a paper in front of it at the focus of the mirror for 2 minutes. What do you observe explain your observation?

Q16. Define principal focus of
a. Concave Mirror,
b. Convex Mirror.

Q17. What is focal length?

Q18. Write the relationship between radius of curvature and focal length.

Q19. Distinguish between concave mirror and convex mirror.

Q20. Give reasons

  1. Concave mirror is a converging mirror.
  2. Convex mirror is a diverging mirror.
  3. Concave mirror has a real focus.
  4. Convex mirror has a Virtual Focus.

Q21. Write the rules for obtaining images formed by concave mirror and convex mirror.

Q22. Give the uses of concave mirror. Explain why you would choose concave mirror for these uses.

Q23. With the help of an activity explain whether the image will move closer to or farther away from the focus as the object is moved away from a convex mirror.

Q24. With the help of activity explain that only convex mirror can show a full length image of a tall object in all its positions.

Q25. How to distinguish between a plane mirror, a concave mirror and a convex mirror without touching them.

Q26. How to distinguish between different types of mirrors without moving them?

Q27. What is the focal length of a plane mirror?

Q28. What are sign conventions for reflections by spherical mirrors.

Q29. What is mirror formula?

Q30. Define magnification.

Q31. The magnification produced by a plane mirror is +1. What does it mean?

Q32. Name the type of mirrors used in the following situations:

  1. Headlight of a car,
  2. Side view mirror of a vehicle,
  3. Solar furnace.

Support your answer with reason.

Q33. Name one means of communication provided by light.

Q34. When light falls on the surface of an object, what will happen?

Q35. Can a plane mirror called as spherical mirror?

Q36. Explain why a ray of light passing through the center of curvature of a concave mirror gets reflected along the same path.

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