Question

Calculate Wavelength, Frequency & Wave no of light
waves whose period is 3x10 s.​

Answer 1

Answer:

Given Time period = 3 * 10 = 30 s

$frequency = \frac{1}{time \: period}$

So frequency = 1/30 = 0.033 Hz.

C = frequency * wavelength,

Therefore, wavelength = 3*10^8 * 30 = 9 *10^9 m.

$wave \: no. = \frac{1}{wavelength}$

So, wave no. = 1/9* 10 ^9 = 1.11 * 10^8 per metre.

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