Modern Physics 2 Question 13
13. In a historical experiment to determine Planck’s constant, a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying a stopping potential. The relevant data for the wavelength of incident light and the corresponding stopping potential are given below:
(2016 Adv.)
0.3 | 2.0 |
0.4 | 1.0 |
0.5 | 0.4 |
Given that
(a)
(c)
(b)
(d)
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Solution:
Subtracting Eq. (ii) from Eq. (i)