A Metal Surface Has a Work Function of 2

question 69

Short Answer

A metal surface has a work function of 2.50 eV. What is the longest wavelength of light that will eject electrons from the surface of this metal? (1 eV = 1.60 × 10^-19 J, c = 3.00 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s)

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Definitions:

Relative Motion

The concept that the motion of an object is always determined relative to some other moving or stationary object.

Frequency

The rate at which something occurs over a particular period of time or in a given sample.

Wavelength

The distance between successive peaks or troughs in a wave, often used in the context of electromagnetic waves like light, sound, and radio.

Amplitude

The maximum extent of a vibration or oscillation, measured from the position of equilibrium.