Question

The frequency of the radio wave is 210 MHz What is the frequency in Hz

Answer 1

Answer:

Sky wave

Explanation:

Used for the propagation of EM waves with a frequency range of 3 – 30 MHz. Make use of the ionosphere so called due to the presence of charged ions in the region of about 60 to 300 km from the earth surface. These ions provide a reflecting medium to the radio or communication waves within a particular frequency range. We use this property of the ionosphere for long-distance transmission of the waves without much attenuation and loss of signal strength.

Another important point to note is the consideration of the angle of the emission of these waves from the ground. The transmitter emits the EM Waves at a critical angle to ensure total reflection to the ground just like the total internal reflection of optic waves otherwise the waves may escape into space. Skip Distance is the distance between the 2 points between which the wave transmission happens.

Answer 2

Given:

Frequency of radio waves is 210 MHz.

To find:

Frequency value in Hz?

Calculation:

• The question wants us to convert the value of frequency of the radio wave from MHz unit to Hz unit.

• MHz - Mega Hertz , Hz - Hertz.

• Whenever, convert from MHz to Hz, we need to multiply the value with 10⁶ factor.

$\sf \therefore \: 210 \: MHz = 210 \times {10}^{6} \: Hz$

$\sf \implies 210 \: MHz = 21\times {10}^{7} \: Hz$

So, the value in Hz is 21 × 10⁷ Hz.