AP EAPCET 25-Aug-2021 Shift 1 Paper

Section: Chemistry

Question : 123 of 160

Marks: +1, -0

If the maximum kinetic energy of photoelectrons ejected from a metal surface when it is irradiated with a radiation of frequency 4×1014 s−1 is 6.63×10−20 J, then the threshold frequency of the metal is _______

2×1014 s−1
1×1014 s−1
3×1014 s−1
1×10−14 s−1

Validate

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