Question

Calculate the frequency of yellow light of wavelength 550mn.The speed of light is 3*10-8ms-1.

Answer 1

given :
c= 3x 10 ^8
wavelength =550nm = 550x 10^-9 m
frequency = v = c/ wavelength
=3*10^8/550x 10^-9
=545*10^14 hertz

Answer 2

"The corresponding frequency of yellow light is $5.45\times { 10 }^{ 14 }\quad Hz$

Solution:

We know that,

For all waves, $\mathrm{v}=\mathrm{f} \lambda.$

For light, the velocity is c, so $v=c=f \lambda.$

By rearranging, $f=\frac { c }{\lambda} \left( { where}c=3.0\times 10^{ 8} \right)$

$=\frac { 3.0\times 10^{ 8 } }{ 550\times 10^{ -9 } }$

$5.45\times { 10 }^{ 14 }\quad Hz$

Frequency can be defined as the number of occurrences that goes on for a unit time.

It is the most essential thing when it comes to a cyclic process."