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Write down the expression for the veloci...

Write down the expression for the velocity of electromagnetic wave in a medium and hence find out an expression for the refractive index of the medium.

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MODERN PUBLICATION-ELECTROMAGNETIC WAVES-REVISION EXERCISES ( SHORT ANSWER QUESTIONS )
  1. What are X-Rays? Give their one use.

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  2. State two properties and two uses of gamma rays.

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  3. Write down the expression for the velocity of electromagnetic wave in ...

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  4. RADIATION PRESSURE

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  5. What is intesity of electromagnetic wave? Give its relation in terms o...

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  6. What is electromagnetic spectrum? Name the important part of the elect...

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  7. Name the parts of the electromagnetic spectrum which is (a) suitable...

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  8. Name the electromagnetic radiation which is used- (a) to kill cancer...

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  9. Which electromagnetic waves are used for the following purposes? (i) ...

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  10. Which of the following electromagnetic wave play an important role in ...

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  11. Name the following electromagnetic waves and arrange them in decreasin...

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  12. Light waves are transverse in nature .

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  13. What is electromagnetic spectrum? Which part of the electromagnetic s...

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  14. An electromagnetic wave of 25 MHz is travelling in X-direction, at C p...

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  15. What are electromagnetic waves? Write the equations for associated ele...

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  16. Show that for an electromagnetic wave in vacuum, at any point, at any ...

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  17. What is an electromagnetic spectrum? Arrange the given electromagnetic...

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  18. (i) Why welder wears a special glass goggles during welding with arc? ...

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  19. (a) Why are infrared waves often called heat waves? Explain. (b) Wh...

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  20. Microwave Oven

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