HSC Science (Electronics) 12th Board ExamMaharashtra State Board
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If the Total Energy of Radiation of Frequency 10^14 Hz is 6.63 J, Calculate the Number Of Photons In the Radiation. - HSC Science (Electronics) 12th Board Exam - Physics

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Question

If the total energy of radiation of frequency 1014 Hz is 6.63 J, calculate the number of  photons in the radiation. (Planck’s constant = 6.63 x 10–34 J.s.)

Solution

Given: E = 6.63 J, v = 1014 Hz, h = 6.63 x 10–34 Js.

n=E/(hv)

=6.63/(6.63xx10^-4)

n=1020

The number of photons emitted in the radiation are 1020.

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APPEARS IN

 2016-2017 (July) (with solutions)
Question 5.4 | 2.00 marks
Solution If the Total Energy of Radiation of Frequency 10^14 Hz is 6.63 J, Calculate the Number Of Photons In the Radiation. Concept: Photoelectric Effect - Hertz’S Observations.
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