Physical Test

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Across

1. Which mirror is used in torches ?

4. The colour of object depends upon the light which the object_________.

7. Which theory said that light is combine of both wave and particle ?

9. Name the elementry particle that defines light.

10. The nature of light can be defined as________.

Down

2. What is the size of the mirror called ?

3. From which medium the light ray is passing through,if the speed of light ray is 3 X 100000000 m/sec ?

5. Which mirror has its reflecting surface on its hollow side ?

6. When the object is in between pole & focus of a concave mirror,the mirror is also known as a ___________ mirror.

8. Where the image formed when object is at infinity ?

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