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EM radiation and quantum phenomena Typeit

Target Level
C
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Attempt
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Type the correct answers into the spaces. Fill all the spaces before clicking ‘Check Answers!’

A photoelectron is emitted from the surface of (Φ = 4.07 eV) with kinetic energy of 4.45 × 10-21 J.
The frequency of the original photon is × 1014 Hz.

A photon with frequency 6.72 × 1015 Hz is incident on the surface of sodium, which has a work function of 2.28 eV. The mass of an electron is 9.11 × 10-31 kg.
The velocity of an electron emitted from the sodium is × 106 m s-1.

The work function of strontium is 2.59 eV. This is equivalent to × 10-19 J.
The minimum frequency a photon can be to liberate a photoelectron from strontium is × 1014 Hz.

An electron exists in an energy level of 24.47 eV. The electron falls to a lower energy level by emitting a photon with frequency 9.46 × 1014 Hz.
The electron falls to an energy level of × 10-18 J, or eV.

A proton has a momentum of 1.31 × 10-24 kg m s-1.
The de Broglie wavelength of the proton is pm.

Muons have a rest mass of 106 MeV/c2. This corresponds to a mass of × 10-28 kg.
A particular muon has a de Broglie wavelength of 2.14 × 10-10 m.
The velocity of the muon is m s-1.

This is your 1st attempt! You get 3 marks for each one you get right. Good luck!

Pass Mark
69%