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The speed of light in air is :...

The speed of light in air is :

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Explore conceptually related problems

A monochromatic ray of light passes from air to glass. The wavelength of light in air is lamda , the speed of light in air is c and in glass is V. if the refractive index of glass is 1*5 , write down (a) the relationship between c and V, (b) the wavelength of light in glass.

A: The speed of light in water is not same as that in flowing water. R: The speed of light in water is not independent of the relative motion between the observer and the medium.

The ratio of the speed of light in air to the speed of light in another medium

A monochromatic beam of light of wavelength lamda passes from air into the glass block , write an expression to show the relation between the speed of light in air and the speed of light in glass .

If the speed of light in ice is 2.3xx10^8 m//s, what is its index of refraction? What is the critical angle of incidence for light going from ice to air?

The speed of light in an isotropic medium depends on

The speed of light in vacuum is equal to

The ratio of the speed of the electrons in the ground state of hydrogen to the speed of light in vacuum is

The ratio of the speed of the electrons in the ground state of hydrogen to the speed of light in vacuum is

State the speed of light in glass

ICSE-LIGHT ENERGY-TEST YOURSELF (SHORT/LONG ANSWER TYPE QUESTIONS)
  1. What is irregular reflection ? Give an example.

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  2. How do we see objects around us?

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  3. State two uses of a plane mirror.

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  4. Can light travel in vacuum ?

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  5. The speed of light in air is :

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  6. State the speed of light in glass

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  7. State whether light slows down or speeds up in the following cases : ...

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  8. State whether light slows down or speeds up in the following cases : ...

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  9. State whether light slows down or speeds up in the following cases : ...

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  10. What are primary colours ? Name the three primary colours.

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  11. What are secondary colours ? Name the three secondary colours.

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  12. Fill in the blanks with the appropriate colour : Blue +.............

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  13. Fill in the blanks with the appropriate colour : Red + Blue + .......

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  14. Fill in the blanks with the appropriate colour : Red + Blue = .....

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  15. Fill in the blanks with the appropriate colour : Green + Red = .....

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  16. The leaves appear green when seen in white light. Give a reason.

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  17. A rose appears red in white light. How will it appear in green light ?...

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  18. A rose appears red in white light. How will it appear in red light ? ...

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  19. Why does a piece of paper appear white in sunlight ? How would you exp...

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  20. A piece of paper appears black in sunlight. What will be its colour wh...

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