For a radiation of 9 text{ GHz} passing throu | vedclass

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(A) The number of waves in a given length $L$ is given by the formula: $	ext{Number of waves} = \frac{L}{\lambda}$.Since the radiation is passing thr

Vedclass · Accepted Answer

$30$

Vedclass · Answer

(A) The number of waves in a given length $L$ is given by the formula: $	ext{Number of waves} = \frac{L}{\lambda}$.Since the radiation is passing through air,its velocity $v$ is approximately equal to the speed of light $c = 3 	imes 10^8 	ext{ m/s}$.Given frequency $
u = 9 	ext{ GHz} = 9 	imes 10^9 	ext{ Hz}$ and length $L = 1 	ext{ m}$.Using the relation $\lambda = \frac{c}{
u}$,we substitute this into the formula:$	ext{Number of waves} = \frac{L 	imes 
u}{c}$.Substituting the values:$	ext{Number of waves} = \frac{1 	imes 9 	imes 10^9}{3 	imes 10^8} = 3 	imes 10^1 = 30$.Thus,the number of waves is $30$.

For a radiation of $9 \text{ GHz}$ passing through air,the number of waves passing through $1 \text{ m}$ length is . . . . . . .

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