Question

3. Calculate the wavelength of wave that has a frequency of 4.75 x 1012Hz.
a. 1.43 x 1021 m
b. 6.31 x 105 m
1.58 x 104 m
d. 6.31 x 105 m
please help
C.

Answer 1

• Frequency=v=4.75×10^12Hz
• Wavelength=?

We know

$\boxed{\sf \lambda=\dfrac{C}{V}}$

$\\ \sf\longmapsto \lambda=\dfrac{3\times 10^8ms^{-1}}{4.75\times 10^{12}s^{-1}}$

$\\ \sf\longmapsto \lambda=0.631\times 10^{-4}m$

$\\ \sf\longmapsto \lambda=6.31\times 10^{-5}m$