RRB Paramedical Staff Nurse Model Paper 6

Question : 97 of 100

Marks: +1, -0

Calculate energy of one mole of photons of radiation whose frequency as

5 × 10^14

Hz.

Solution:

One thing we have to keep in mind here.
1 mole

=6.022 × 10^{23}

Now the energy of a single photon

E=h ν

=6.626 × 10^{-34} J s × 5 × 10^{14} s^{-1}

=(3.313 × 10^{-19} {J})

Energy of one mole of photons

=(3.313 × 10^{-19} {J})(6.022 × 10^{23} {mol}^{-1})

=199.51 {kJ} {mol}^{-1}

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