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Write the answer to the following : How...

Write the answer to the following :
How do we come to know that light travels in a straight line ?

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The rays of light are seen entering a room through a slit in a door or a small hole in the roof. These rays show dust particles within them. Due to these particles, the path of the light is clearly seen. As the rays move to the ground from the hole in the , they are seen to be in a straight line.
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NAVNEET PUBLICATION-LIGHT AND THE FORMATION OF SHADOWS-QUESTION BANK
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  7. Write the answer to the following : Describe the type of image seen i...

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  8. Write the answer to the following : Describe the type of image seen i...

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  9. Write the answer to the following : What is Newton's disc ? What do y...

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  10. What are the condition necessary for the formation of a rainbow?

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  11. Write the answer to the following : What are the factors on which the...

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  12. Write the answer to the following : What is shadow ?

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  13. Use your brain power ! How will you light up a dark room using reflec...

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  14. Use your brain power ! Try to start the TV by operating the remote co...

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  15. Make a list of some luminous objects and substances and classify them ...

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  16. Compare the objects in your environment with the shadows they form.

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  17. On which surfaces can you see your reflection ?

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  18. Which characteristics of surfaces are useful while forming an image ?

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  19. Why do we see moonlight ?

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  20. When is National Science Day celebrated ? Why ?

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