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When a low flying aeroplane passes over ...

When a low flying aeroplane passes over head, we sometimes notice a slight shaking of the picture on our TV screen. This is due to

A

diffraction of the signal received from the antenna

B

interference of the direct signal received by the antenna with the weak signal reflected by the passing aircraft

C

Change of magnetic flux occurring due to the passage of aircraft

D

vibrations created by the passage of aircraft

Text Solution

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The correct Answer is:
C
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Answer the following questions : (a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the piture on our TV screen. Suggest a possible expanation. (b) As you have learnt in the text, the principle of linear superposition of wave displacement is basic to understanding intensity distributions in diffractions and interference patterns. What is the justification of this principle ?

What is the reason behind the disturbing of incoming and reflected signals when a low flying aircraft passes overhead, which results in slight shaking of the picture on our TV screen ?

AAKASH SERIES-ELECTROMAGNETIC WAVES-EXERCISE -IA
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  3. When a low flying aeroplane passes over head, we sometimes notice a sl...

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  4. A : If the earth did not have an atmosphere, its average surface temp...

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  5. Ozone layer protestes the living cells from

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  6. Ozone layer blocks the radiations of wave length: (1.) less than 3 × ...

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  7. Practically ozone layer absorbs the radiation of wavelength

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  8. A radiation of energy E falls normally on a perfectly reflecting surfa...

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  9. The type of electromagnetic wave propagation which is effected as a re...

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  10. X-rays are known as to be electromagnetic radi­ation. Therefore the X-...

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  11. The altitude of the ozone layer in the atmosphere and the ‘type’ of th...

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  12. Four atmospheric layers are given below, namely (i) stratosphere (ii) ...

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  15. The atmosphere above the height of 80 km is called

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  16. The frequency from 3Hz to 30MHz is known as

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  17. The frequency from 3xx10^(9) Hz to 3xx10^(10) Hz is

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  18. A cube of edge a has its edges parallel to X, Y and Z -axis of rectang...

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