The frequency band of FM broadcast is

Important Questions on Communication Systems

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 12

For television broadcasting, the frequency employed is normally _____.

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 13

The radio waves of frequency ranging from $3 \mathrm{MHz}$ to $30 \mathrm{MHz}$ are called

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 15

$3-30$ $\mathrm{MHz}$ frequency range is known as

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 16

Satellite communication is generally carried out for frequencies above

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 17

Three waves $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ of frequencies $1600 \mathrm{kHz}, 5 \mathrm{MHz}$ and $60 \mathrm{MHz}$, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication:

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 18

The velocity of electromagnetic waves in a dielectric medium $\left({\mathrm{\epsilon }}_{\mathrm{r}}=4\right)$ is -

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 20

The TV transmission tower in Delhi has a height of $240 \mathrm{m}$. The distance up to which the broadcast can be received (taking the radius of the earth to be $6.4\times {10}^6 \mathrm{m}$) is

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 21

A ground receiver station is receiving a signal at $500 \mathrm{MHz}$ transmitted from a ground transmitter at a height of $300 \mathrm{m}$ located at a distance of $500 \mathrm{km}.$ It is coming via
$\left(\text{Radius of earth is}, R=6400 \mathrm{km}\right)$