Question

10 class lenses test​

Answer 1

Explanation:

LIGHT

TEST

MAXIMUM TIME: 40 MINUTES

MAXIMUM MARKS: 25 MARKS

1. Name the type of mirror used in following situations (3)

a. Headlights of the car

b. Side/rear view mirror of a vehicle

c. Solar furnace

2. What are two types of reflexive index. (2)

3. Differentiate between concave and convex lens. (3)

4. Draw the diagram of path of light when it travels through a glass slab. (3)

5. What are the properties of the image formed by plane mirror? (2)

6. Write laws of reflection (2)

7. Draw and explain the ray diagram formed by a convex mirror when (5)

a. Object is at infinity

b. Object is at finite distance from the mirror

8. Name the mirror which can show the size of the object to be double of its original. (1)

9. If the speed of light in water is 2.25X108m/s and the speed in vaccum is 3X108 m/s . Calculate the refractive index of water. (2)

10. Find the focal length of a lens of power -2.0 D. what type of lens is this? (2)

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