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- How much energy does a photon with a frequency of 50kHz carry?
- A photon carries 10-30J of energy. What is its frequency?
- How many photons of frequency 545 THz does a 20W bulb give out each second?
- In one minute, a bulb gives out a million photons of frequency 600 THz. What is the power of the bulb?
- The photons in a beam of electromagnetic radiation carry 2.5μJ of energy each. How long should the phasors representing this radiation take to rotate?
- An electron moves at 30,000 ms-1. What is its de Broglie wavelength?
- What is its frequency?
- What is its kinetic energy, in eV?
- Given that it is travelling out of an electron gun, what was the potential difference between the anode and the cathode?
- An electron is accelerated by a potential difference of 150V. What is its frequency?
