Module: Photoelectric Effect #25

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Mariam Baghdasaryan 4F
Posts: 37
Joined: Fri Sep 28, 2018 12:29 am

Module: Photoelectric Effect #25

Postby Mariam Baghdasaryan 4F » Tue Oct 23, 2018 10:46 pm

25. Photoelectric experiments gave rise to a new equation relating the energy of light to its frequency. Select the right equation.
A. λv = c
B. Ek = mv2/2
C. mv2/2 = hv - φ
D. E = hv
E. None of the above

Is E=hv the correct answer since it is the one that clearly relates energy to the frequency? I am confused because I thought this equation was known before the photoelectric experiments.

Xiangkun Shi 3E
Posts: 31
Joined: Fri Sep 28, 2018 12:25 am

Re: Module: Photoelectric Effect #25

Postby Xiangkun Shi 3E » Tue Oct 23, 2018 11:10 pm

The answer is E=hv. This equation is actually one main experiment result of the photoelectric experiment.

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