The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength 4100 Å is/are :

Question

Dr. Abubacker · Accepted Answer

[Solution from source] E = 12400/4100 ≈ 3.0 eV. This exceeds the work functions of A (1.92 eV) and B (2.0 eV) but not C (5 eV), so only A and B emit. 'All three' ignores that 5 eV > 3 eV. Answer (3).

Q. The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength 4100 Å is/are :

Explanation

Reviewed by Dr. Abubacker

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