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The maximum wavelength an electromagnetic wave can haveand still eject an electron from a copper surface is 264 $\mathrm{nm}$ . What isthe work function of a copper surface?

$7.53 \times 10^{-19} \mathrm{J}$

Physics 103

Chapter 30

Quantum Physics

Cornell University

University of Michigan - Ann Arbor

Hope College

Lectures

02:51

In physics, wave optics is…

10:02

Interference is a phenomen…

01:28

The maximum wavelength tha…

09:15

When ultraviolet light wit…

01:30

If the work function of a …

04:33

04:06

04:53

Electrons are ejected from…

04:45

00:35

Light of wavelength $500 \…

03:42

Photoelectric Effect Green…

02:27

(II) When UV light of wave…

maximum prevalent equals 2 64 nanometers. Maximum babble int Lambda max equals 2 64 nanometers 2 64 nanometers equal to 64 multiplied by 10 to the power minus nine meters minus nine meters. We need to find out work function. Work function is unknown. Work function w is unknown. Well, we know date and Reggio foot on equals kinetic energy plus work function In this case, kinetic energy zero therefore, X f energy or foot on equals work function on DDE sold ing for f We have f equals f equals w divided by that excuse Uh, the planks constant well, we know they re equals F lander. We, in this case, is speed off light. Therefore, C equals F lender and F can be written in terms of sea and Lando. Yeah, and equals See divided by Lambda. Let's substitute this value here in the work function equation. Therefore, we have c divided by, um CD by sea, divided by lender equals were function divided by itch and work. Function equals XY divided by landa No, let's plug in the values we have actually have CVM lambda. Let's plug in the values therefore were function equals 6.63 multiplied by identity power minus 34. Multiply by speed off light. Three. Multiply by 10 to the power eight. Divided by a lender. Lend vehicles to 64 multiply by 10 to the power minus nine meters minus nine and solving, multiplying and dividing. We get work function equals 7.5. Multiply by 10 to the power minus 19. Jules

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In physics, wave optics is the study of the behavior of light, or other elec…

Interference is a phenomenon in which two waves superpose to form a resultan…

The maximum wavelength that an electromagnetic wave can have and still eject…

When ultraviolet light with a wavelength of 254 nm falls on a clean copper s…

If the work function of a metal is $3.2 \mathrm{eV}$, what is the maximum wa…

When ultraviolet light with a wavelength of 254 nm falls upon a clean metal …

Electrons are ejected from a metallic surface with speeds ranging up to $4.6…

Electrons are ejected from a metallic surface with speeds of up to $4.60 \ti…

Light of wavelength $500 \mathrm{nm}$ is incident on a metallic surface. If …

Photoelectric Effect Green light $(\lambda=532 \mathrm{nm})$ strikes an unkn…

(II) When UV light of wavelength 255 nm falls on a metal surface, the maximu…

07:31

Suppose the fiber depicted in Figure $26-75$ has an index of refraction of 1…

06:34

A hydrogen atom, initially at rest, emits an ultraviolet photonwith a wa…

02:06

CE Predict/Explain (a) In principle, do your eyes have greaterresolution…

03:29

The yellow light of sodium, with wavelengths of 588.99 $\mathrm{nm}$ and…

05:14

Without glasses, your Uncle Albert can see things clearly only ifthey ar…

04:07

A manufacturing plant uses 2.22 kW of electric power provided by a $60.0-\ma…

02:34

What speed must a neutron have if its de Broglie wavelength is tobe equa…

07:16

An ac voltmeter, which displays the rms voltage between thetwo points to…

01:50

If the maximum voltage in the square wave shown in Figure $24-31$ is $V_{\ma…

01:35

REFERRING TO Quick EXAMPLE $22-15$ The current $I_{2}$ is adjusted until the…

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