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An electric dipole of dipole moment $p$ and rotational inertia $I$ is allowed to oscillate about its equilibrium position in a uniform electric field $E$ . Then, for small amplitudes the frequency of oscillation will be

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Important Questions on Space Communication

EASY

Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Find the potential due the dipole when the angle subtended by the two charges at the point

P

⊥^{r}

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Why is Hertzian dipole so named?

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Power in

Watt

radiated by a Hertzian dipole of length

\frac{λ}{30}

and carrying a current

2 A

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Choose the best difinition of a dipole-

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Electromagnetic waves are _____ waves.

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

This type of antenna is called a Hertzian dipole, after the German physicist Heinrich Hertz. associated with the real resistance is due to ohmic heating of the antenna.

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

A dipole having dipole moment

\vec{P}

is placed in an electric field

\vec{E}

. What will be the torque acting on the dipole?

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Represent the union of two sets by Venn diagram for each of the following.

$X = {x | x$ is a prime number between $80$ and $100}$

$Y = {y | y$ is an odd number between $90$ and $100}$

EASY

Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

What is the theoretical gain of a Hertzian dipole?

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

What is radiation emitted by Hertzian dipole?

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

An electric dipole will be in stable equilibrium if the angle between the axis of the dipole and the electric field is_______

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Medium is necessary for the transfer of heat by radiation.

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

1 μC

and

- 1 μC

are placed at a distance of

5 cm

forming a dipole what is the amount of torque required to place the dipole

⊥^{r}

to an electric field of

3 \times 10^{5} \frac{N}{C}

EASY

Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

The potential due to a dipole at a point

P

from it is the

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Practically we don’t use Hertzian dipole.

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

What is a Hertzian dipole antenna?

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

Cotyledons are also called-

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

If the radiation resistance of a Hertzian dipole is

100 Ω

, then the radiation resistance of short dipole is

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

What is Hertzian dipole and its structure?

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Physics>Modern Physics>Space Communication>Radiation Due to an Oscillating Dipole

For two charges

3 C

and

- 3 C

separated by

1 cm

and are located at distance

5 cm

and

7 cm

respectively from the point

P

, then the distance between their midpoint and the point

P

will be

An electric dipole of dipole moment p and rotational inertia I is allowed to oscillate about its equilibrium position in a uniform electric field E. Then, for small amplitudes the frequency of oscillation will be

Important Questions on Space Communication

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An electric dipole of dipole moment $p$ and rotational inertia $I$ is allowed to oscillate about its equilibrium position in a uniform electric field $E$ . Then, for small amplitudes the frequency of oscillation will be