Friday 8 January 2016

  CLASS-VII                                                            TOPIC -LIGHT              SUB:-LIGHT
Objective type Questions:
1. Out of convex mirror and concave mirror, whose focus is situated behind themirror?


2. A ray of light falls on a mirror normally. What are the values of angle of incidence and the angle of reflection

3 Which spherical mirror is called a divergent mirr

4 Name the type of mirror that always forms a virtual image for a real object?

5. Which of the two is a diverging lens? Convex lens (or) Concave lens.

Short types Questions
Q1. What do you mean by reflection of light?
Q2. How does a path of light can be changed?
Q3. What are the laws of reflection?

Q4. What is the nature of image formed in a plane mirror
Q5. Difference between real & virtual image
Q6. What type of mirror – the inner surfact of the Spoon acts as and the outer surface of the spoon acts as ?

Q7. Which concave mirror called a converging mirror and a convex mirror called a diverging mirror
Q8. What is the nature of image formed in a convex mirror?

Q9. What is the nature of image formed in a concave mirror?

Q10. What are the uses of concave mirror?
11. What are the uses of Convex mirror?
Q12. What are uses of Plane Mirror?

Q13. What is a lens?.
Q15. Why a convex lens is called a converging lens and a concave lens a diverging lens?

Q16. What is the nature of image formed in a concave lens?

Q17. What is the nature of image formed in a convex lens?

Q18. What are the uses of lens
Q19. How is the rainbow formed?
Q20. Where else you can see seven colours of sunlight?

Q 21. State the characteristics of the image formed by a plane mirror.
Q22. Fill in the blanks
a. An image that cannot be obtained on a screen is called --------
b. Image formed by a convex ------------- is always virtual and smaller in size.
c. An image formed by a ------------- mirror is always of the same size as that of the object.
d. An image which can be obtained on a screen is called a ----------- image.
e. An image formed by a concave ------------ cannot be obtained on a screen.

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