MCQ
For television broadcasting, the frequency employed is normally
  • $30-300 \mathrm{MHz}$
  • B
    $30-300 \mathrm{GHz}$
  • C
    $30-300 \mathrm{KHz}$
  • D
    $30-300 \mathrm{~Hz}$

Answer

Correct option: A.
$30-300 \mathrm{MHz}$
VHF (Very High Frequency) band having frequency range 30 $M H z$ to $300 \mathrm{MHz}$ is typically used for TV and radar transmission.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The dimensions of resistivity in terms of $M, L, T$ and $Q$ where $Q$ stand for the dimensions of charge, is
A body of mass $m$ is taken to the bottom of a deep mine. Then
A certain amount of current when flowing in a properly set tangent galvanometer, produces a deflection of $45^{\circ}$. If the current be reduced by a factor of $\sqrt{3}$, the deflection would
A microammeter has a resistance of $100 \Omega$ and full scale range of $50 \mu \mathrm{A}$. It can be used as a voltmeter or as a higher range ammeter provided a resistance is added to it. Pick the correct range and resistance combination
A small coil of $N$ $turns$ has an effective area $A$ and carries a current $I$. It is suspended in a horizontal magnetic field $\overrightarrow B $ such that its plane is perpendicular to $\overrightarrow B $. The work done in rotating it by $180^\circ $ about the vertical axis is
An electric bulb marked $40 W$ and $200 V$, is used in a circuit of supply voltage $100 V$. Now its power is
The wavelength of a particle is $99 \mathrm{~cm}$ and that of other is $100 \mathrm{~cm}$. Speed of sound is $396 \mathrm{~m} / \mathrm{s}$. The number of beats heard is
The displacement of a particle, moving in a straight line, is given by $s=2 t^2+2 t+4$ where $s$ is in metres and $t$ in seconds. The acceleration of the particle is
3 identical bulbs are connected in series and these together dissipate a power $P$. If now the bulbs are connected in parallel, then the power dissipated will be
The angle between two vectors $2 \hat{i} \quad 3 \hat{j} \quad \hat{k}$ and $\hat{i} \quad 2 \hat{j} \quad 4 \hat{k}$ is