de-Broglie wavelength of an electron emitted by a metal whose threshold frequency is 2.25…
Physics · JEE Main · NTA Exams — Dual Nature of Matter and Radiation
de-Broglie wavelength of an electron emitted by a metal whose threshold frequency is \(2.25 \times 10^{14} \mathrm{~Hz}\) when exposed to visible radiation of wavelength 500 nm is of the order is:
- 1nm
- \(\text { 1A }\)
- 1 pm
- 1 fm
Answer
(B) 1A
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