Question

My favorite color today is 7.89 x 10¹⁴Hz. How much energy does a photon of this color carry?

         A) 6.31 x 10^-19J    B) 2.11 x 10^-19J    C) 8.07 x 10^-19J   D) 5.23 x 10^-19J     

Answer 1

Given :

The frequency,

Energy of photon of this

color need to be determined.

Solution:

The energy of the photon is given by ,

Where is the frequency(Hz) and h is plank's constant whose value is 6.63*10^-34 m^2.kg/s

Now substituting the values for E,

Hence the option (D) is the right answer .

Note : If you like my answer,kindly up-vote my answer.This will be a kind of encouragement for me.Thank you.