Question

Plz Help Me

Answer 1

The answer is D.) 1.36 x 1012 m

Answer 2

Answer:- The wavelength is $1.36*10^1^2m$ and the right option is D.

Solution:-  Wavelength is inversely proportional to the frequency and the equation is:

$\lambda =\frac{c}{\nu }$

where, $\lambda$ is the wavelength, c is the speed of light and $\nu$ is frequency.

Frequency is $2.20*10^-^4Hz$ and the speed of light is $3.00*10^8\frac{m}{s}$ .

Since, $1Hz=1s^-^1$

So, $2.20*10^-^4Hz=2.20*10^-^4s^-^1$

Let's plug in the values in the equation:

$\lambda =\frac{3.00*10^8m.s^-^1}{2.20*10^-^4s^-^1}$

$\lambda =1.36*10^1^2m$

Hence, the right option is D) $1.36*10^1^2m$ .