Wave-Particle Duality & Advanced Problems

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1.
In the photoelectric effect, increasing the intensity of light above threshold frequency:
2.
The threshold wavelength for a metal with work function 3.1 eV is:
3.
The uncertainty in position of an electron (m = 9.1 x 10^-31 kg) with velocity uncertainty of 10^3 m/s is:
4.
The de Broglie wavelength is significant for:
5.
The de Broglie wavelength of an electron accelerated through 100 V is:

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