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IceJOKER [234]
3 years ago
11

In his explanation of the threshold frequency in the photoelectric field, Einstein reasoned that the absorbed photon must have t

he minimum energy required to dislodge an electron from the metal surface. This energy is called the work function (φ) of that metal. What is the longest wavelength of radiation (in nm) that could cause the photoelectric effect in W, where φ = 4.30 × 10−19 J?
Physics
1 answer:
Doss [256]3 years ago
5 0

Answer:

4.6×10^-7 m or 0.46nm

Explanation:

From

Wo= hc/λ

Where:

Wo= work function of the metal

h= planks constant

c= speed of light

λ= wavelength

λ= hc/Wo

λ= 6.6×10^-34 × 3×10^8/4.30×10^-19

λ= 4.6×10^-7 m

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