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Answer the following questions : (a) W...

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 ?

A

Diffraction of the signal received from the antenna

B

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

C

Change of magnetic flux occurring due to passage of aircraft

D

Vibration created by the passage of aircraft

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH INSTITUTE-ELECTROMAGNETIC INDUCTION-Assignment (SECTION - A)
  1. The equivalent quantity of mass in electricity is

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  2. Dimensional formula of self-inductance is

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  3. A time varying magnetic flux passing through a coil is given by phi=xt...

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  4. A metalic ring is dropped down, keeping its plane perpendicular to a c...

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  5. Lights of a car become dim when the starter is opereterd. Why?

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  6. Coefficient of coupling between two coils of self-inductances L(1) and...

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  7. There is a uniform magnetic field directed perpendicular and into the ...

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  8. A square loop of wire with side length 10 cm is placed at angle of 45^...

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  9. A uniformly wound solenoid coil of self inductance 1.8xx10^(-4)H and r...

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  10. The magnitude opf the earth's magnetic field at a place is B(0) and th...

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  11. Two parallel rails of a railway track insulated from each other and wi...

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  12. Answer the following questions : (a) When a low flying aircraft pass...

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  13. Electric field induced by changing magnetic fields are

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  14. A circular loop of radius R, carrying current I, lies in x-y plane wit...

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  15. A helicopter rises vertically upwards with a speed of 100 m//s. If the...

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  16. The energy stored in an inductor of self inductance L carrying current...

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  17. An electric motor runs a D.C. source of e.m.f. 200 V and draws a curre...

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  18. Induction furnace is based on the heating effect of

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  19. Two identical circular loops of metal wire are lying on a table withou...

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  20. A short solenoid of length 4 cm, radius 2 cm and 100 turns is placed i...

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