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Why does a beam of light bend when it en...

Why does a beam of light bend when it enters glass at an angle? Why does it not bend if it enters the glass at right angles?

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Why does a ray of light bend when it travels from one medium to another.

When a rays of light enters a glass slab from water

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Why does a ray of light bend towards normal as it passes from air to glass ?

LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise
  1. a) How can you bend light away from the normal? b) How must light tr...

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  2. Draw and complete the following diagrams to show what happens to the b...

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  3. Why does a beam of light bend when it enters glass at an angle? Why do...

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  4. What name is given to the ratio of sine of angle of incidence to the s...

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  5. Write the relation between the angle of incidence and the angle of ref...

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  6. What is the unit of refractive index?

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  7. Which has higher refractive index: water or glass?

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  8. Refractive indices of carbon disulphide and ethyl alcohol are 1.63 and...

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  9. The refractive index of diamond is 2.42. What is the meaning of this s...

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  10. If the refractive index for light going from air to diamond be 2.42, w...

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  11. How is the refractive index of a material related to the speed of ligh...

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  12. Fill in the following blank with a suitable word: When a ray of ligh...

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  13. Give three examples of materials that refract light rays. What happens...

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  14. Define Snell's law of refraction. A ray of light is incident on a glas...

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  15. The speed of light in vaccum and in two different glasses is given in ...

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  16. The speed of light in air is 3 xx 10^(8) m/s. IN medium X its speed is...

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  17. What is the speed of light in a medium of refractive index 6/5 if its ...

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  18. The refractive index of glass is 1.5. Calculate the speed of light in ...

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  19. The speed of light in wateris 2.25 xx 10^(8)m/s. If the speed of light...

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  20. The refractive indices of four substances P,Q,R and S are 1.50, 1.36, ...

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