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What does the Dual Nature of Radiation and Matter revision sheet cover?

Photon energy, Work function, Max kinetic energy, Electron emission: three ways out, How strongly heat and field matter, The photoelectric effect, observed, Einstein's photoelectric equation, energy balance, work function and threshold frequency, stopping potential, Brightness and the stopping potential, What raises current vs what raises stopping potential.

Is this for Class 12 Maharashtra HSC Physics?

Yes, it is written for the Maharashtra HSC Physics syllabus.

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Dual Nature of Radiation and Matter — Class 12 Maharashtra HSC Physics revision notes

A 6-page visual revision sheet for Dual Nature of Radiation and Matter, written for Class 12 Maharashtra HSC Physics. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.

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Dual Nature of Radiation and Matter in one look

light behaves like a particle, matter behaves like a wave: the same duality, seen from both sides

Photon energy: a packet, not a spread-out wave
Work function: the least energy to free an electron
Max kinetic energy: whatever the photon leaves over

Electron emission: three ways out

free electrons move inside a metal but cannot leave on their own
leaving costs the work function φ_0 (the wall, W in the figures)
thermionic: heat the metal, a few electrons gain enough to climb out
field emission: a strong field thins the barrier, electrons slip through
photoelectric: one photon gives all its energy to one electron
a photon with less than φ_0 frees none: the electron falls back

How strongly heat and field matter

thermionic current J∝ T^2e^-W/kT: almost nothing until the metal is hot
a lower work function gives far more current at the same temperature
field emission needs no heating but a field of about 10^8 V/m
in a hot or field-fed metal the electrons leave with little energy; a photon can give much more

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What this Dual Nature of Radiation and Matter sheet covers

Photon energy
Work function
Max kinetic energy
Electron emission: three ways out
How strongly heat and field matter
The photoelectric effect, observed
Einstein's photoelectric equation
energy balance
work function and threshold frequency
stopping potential
Brightness and the stopping potential
What raises current vs what raises stopping potential
Raise the intensity
Raise the frequency
The photocell
Particle nature of light: the photon
The photon's energy and momentum
energy, from frequency or wavelength
momentum
a handy form
Compton shift
shift of a photon scattered by an electron
largest shift, backscattering
The Compton effect
Light pushes
de Broglie waves
wavelength of any particle of momentum p
after acceleration through potential V, charge q
for an electron
de Broglie wavelength, the special forms
Davisson and Germer
Wave-particle duality, both directions
The electron microscope
Symbols
Traps that cost marks
Tricks that save time

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