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Aleksandr [31]
3 years ago
12

Microwave ovens emit microwave energy with a wavelength of 12.4 cm. what is the energy of exactly one photon of this microwave r

adiation?

Physics
2 answers:
Leni [432]3 years ago
5 0
<span>Formula- E = hc/ {wavelength} Given in quation-wavelength=12.4 cm We know the value of h and c. h=6.626 * 10^-34 Js c= 2.997 * 10^8 m/s wavelength=12.4 cm converted to 0.124 m E = [ 6.626 * 10^-34 Js * 2.997 * 10^8 m/s ] / 0.124 m E = 1.60 * 10^-24 J 1.60 * 10^-24 J of energy of exactly one photon of this microwave radiation have.</span>
Helen [10]3 years ago
4 0

The energy of the photon emitted is about 1.60 × 10⁻²⁴ Joule

<h3>Further explanation</h3>

The term of package of electromagnetic wave radiation energy was first introduced by Max Planck. He termed it with photons with the magnitude is :

\large {\boxed {E = h \times f}}

<em>E = Energi of A Photon ( Joule )</em>

<em>h = Planck's Constant ( 6.63 × 10⁻³⁴ Js )</em>

<em>f = Frequency of Eletromagnetic Wave ( Hz )</em>

The photoelectric effect is an effect in which electrons are released from the metal surface when illuminated by electromagnetic waves with large enough of radiation energy.

\large {\boxed {E = \frac{1}{2}mv^2 + \Phi}}

\large {\boxed {E = qV + \Phi}}

<em>E = Energi of A Photon ( Joule )</em>

<em>m = Mass of an Electron ( kg )</em>

<em>v = Electron Release Speed ( m/s )</em>

<em>Ф = Work Function of Metal ( Joule )</em>

<em>q = Charge of an Electron ( Coulomb )</em>

<em>V = Stopping Potential ( Volt )</em>

Let us now tackle the problem !

<u>Given:</u>

λ = 12.4 cm = 12.4 × 10⁻² m

h = 6.63 × 10⁻³⁴ Js

c = 3 × 10⁸ m/s

<u>Unknown:</u>

E = ?

<u>Solution:</u>

E = h \times \frac{c}{\lambda}

E = 6.63 \times 10^{-34} \times \frac{3 \times 10^8}{12.4 \times 10^{-2}}

E \approx 1.60 \times 10^{-24} ~ Joule

<h3>Learn more</h3>
  • Photoelectric Effect : brainly.com/question/1408276
  • Statements about the Photoelectric Effect : brainly.com/question/9260704
  • Rutherford model and Photoelecric Effect : brainly.com/question/1458544

<h3>Answer details</h3>

Grade: College

Subject: Physics

Chapter: Quantum Physics

Keywords: Quantum , Physics , Photoelectric , Effect , Threshold , Wavelength , Stopping , Potential , Copper , Surface , Ultraviolet , Light

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