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Dual Nature of Radiation and Matter
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Einstein's Photoelectric Equation : Energy Quantum of Radiation
Einstein's Photoelectric Equation : Energy Quantum of Radiation
Revise with Concepts
Photo Electric Effect of Light and Wave Theory of Light
Example
Definitions
Formulaes
Einstein's Photoelectric Equation
Example
Definitions
Formulaes
Particle Nature of Light
Example
Definitions
Formulaes
Learn with Videos
Einstein's Photoelectric Equation
13 mins
Problems on Einstein's Photoelectric Equation - I
9 mins
Problems on Einstein's Photoelectric Equation - II
6 mins
Quick Summary With Stories
Photoelectric Effect - III
3 mins read
Einstein’s Photoelectric Equation.
3 mins read
The Light Is Having Particle Nature As Well As Wave Nature(dual nature of light )
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Particle Nature of Light - Problem L1
2 mins read
Important Questions
Derive Einstein's photoelectric equation.
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Draw a plot showing the variation of photoelectric current with collector plate potential foe two different frequencies,
$v_{1}>v_{2}$
, of incident radiation having the same intensity. In which case will the stopping potential be higher ? Justify your answer.
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Write Einstein's photoelectric equation and mention which important features in photoelectric effect can be explained with the help of this equation.
The maximum kinetic energy of the photoelectrons gets doubled when the wavelength of light incident on the surface changes from
$_{′}λ_{1}$
to
$_{′}λ_{2}$
. Derive the expressions for the threshold wavelength
$_{′}λ_{0}$
and work function for the metal surface
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Which of the following phenomenon works on the particle nature of light?
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Light of wave length 5000 Angstrom falls on a sensitive plate with photoelectric work function of 1.9 eV. The maximum kinetic energy of the photo electron emitted will be..
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In a photoemissive cell with exciting wavelength
$λ$
, the fastest electron has speed
$v$
. If the exciting wavelength is changed by
$3λ/4$
, the speed of the fastest emitted electron will be :
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In the stydy of a photoelectric effect the graph between the stopping potential V and frequency v of the incident radiation on two different metals P and Q is shown below:
(i) Which one of the two metals has higher threshold frequency?
(ii) Determine the work function of the metal which has greater value.
(iii) Find the maximum kinetic energy of electron emitted by light of frequency
$8×10_{14}Hz$
for this metal.
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Write Einstein's Photo-Electric Equation and explain the terms in it.
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What is matter waves? Write any two characteristics of it.
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Sketch the graphs showing variation of stopping potential with frequency of incident radiations for two photosensitive materials A and B having threshold frequencies
$V_{A}>V_{B}$
(i) In which case is the stopping potential more and why?
(ii) Does the slope of the graph depend on the nature of the material used? Explain
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