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What are the quantities that oscillate in an electromagnetic wave? Show by means of a diagram, the relative orientation of the directions of the electric vector, magnetic vector and propagation of the electromagnetic wave.

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MODERN PUBLICATION-ELECTROMAGNETIC WAVES-REVISION EXERCISES ( SHORT ANSWER QUESTIONS )
  1. What is electromagnetic spectrum? Which part of the electromagnetic s...

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

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

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

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

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

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

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  8. Microwave Oven

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  9. Why infrared waves are called heat waves?

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  10. Give reasons for the following: (i) Long distance radio broadcasts u...

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  11. (a) How does oscillating charge produce electromagnetic waves? (b) S...

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  12. Name the types of e.m. radiations which (i) are used in destroying can...

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  13. (a) How are electromagnetic waves produced? (b) How do you convince ...

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  14. Arrange the following electromagnetic waves in the descending order of...

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  15. Write any four characteristics of electromagnetic waves. Give two uses...

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  16. (a) Identiy the part of the electromagnatic spectrum used in (i) radar...

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  17. a) Cancer is one of the most dreaded diseases of humans. Explain 'Cont...

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  18. Answer the following: (a) Name the em waves which are used for the tr...

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  19. Identify the electromagnetic waves whose wavelength very as: (a) 10^-1...

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  20. What are the quantities that oscillate in an electromagnetic wave? Sho...

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