Question

If a source is transmitting electromagnetic wave of frequency 8.2 × 10⁶ Hz, then wavelength of the electromagnetic waves transmitted from the source will be(a) 36.6 m(b) 40.5 m(c) 42.3 m(d) 50.9 m

Answer 1

here is the answer of your question is

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we know, v=3×10 ^8. m/s.

so, v=frequency ×wavelength

by putting value ,

3×10 ^8 /8.2×10 ^6

we get, 36.6.

option A

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Answer 2

The wavelength of the electromagnetic waves transmitted from the source will be 36.6 m.

Explanation:

It is given that,

Frequency of the sound wave, $f=8.2\times 10^6\ Hz$

Speed of the electromagnetic wave is equal to the speed of light, $c=3\times 10^8\ m/s$

We need to find the wavelength of the electromagnetic waves transmitted from the source. The relation between frequency, wavelength and the velocity is given by :

$v=f\times \lambda$

$\lambda=\dfrac{v}{f}$

$\lambda=\dfrac{3\times 10^8\ m/s}{8.2\times 10^6\ Hz}$

$\lambda=36.58\ m$

or

$\lambda=36.6\ m$

So, the wavelength of the electromagnetic waves transmitted from the source will be is 36.6 m. Hence, this is the required solution.

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