00:01
We have been given photon over here, which is having the wavelength of 9 .50 nanometers, and we have to find the frequency and the energy of the photon over here.
00:11
Now, to find the energy, we know that energy e can be calculated by e is equals to hc by limda, where h is planks constant over here.
00:21
H is planks constant and the value of planks constant is equals to 6 .6 into 10 to the power minus 34.
00:29
This is the value of planks constant.
00:32
That is in joules second and the value of c that is speed of light will be over here.
00:36
So c is equal to 3 multiplied by 10 to the power 8 meter per second.
00:42
By this we can regulate the value of e that is energy over here.
00:45
So we can say e is equal to the energy e is equal to h that is 6 .6 multiplied by 10 to the power minus 34 which is further multiplied by the speed of light 3 multiplied by 10 to the power 8 divided by lambda, that is 950 and nanometer will be converted to meters, so we will multiply it by 10 to the power minus 9.
01:09
So when you will solve this, you will get the value as, we can solve this as 6 .6 multiplied by 3 divided by 950 and i have calculated all these values, so we can write them as 10 to the power minus 17.
01:25
On further solving this, we can get the value of e is equal to, so we can say e that that is energy over here.
01:34
So, energy is equal to 2 .09 multiplied by 10 to the power minus 19 and this value will be in jule.
01:43
So this is the value of energy over here.
01:48
Now, we'll further move to find out the frequency...