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The Particle Nature of Light

Q. It requires 75 kJ to heat a cup of water from room temp to boiling in the microwave oven. If the wavelength of microwave radiation is 2.9×10−3m, how many mol of photons are required to heat the water?

Solved • Apr 23, 2019

The Particle Nature of Light

Q. How many photons are produced in a laser pulse of 0.677 J at 475 nm?

Solved • Apr 10, 2019

The Particle Nature of Light

Q. How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 670 nm, contain?

Solved • Mar 31, 2019

The Particle Nature of Light

Q. Microwave ovens emit microwave energy with a wavelength of 12.3 cm. What is the energy of exactly one photon of this microwave radiation?

Solved • Mar 27, 2019

The Particle Nature of Light

Q. Calculate the energy of a photon of electromagnetic radiation whose frequency is 2.77×1014 s−1 .

Solved • Mar 24, 2019

The Particle Nature of Light

Q. Microwave radiation has a wavelength of 12.4 cm . How many photons are required to heat 275 mL of coffee from 25.0 ∘C to 62.0 ∘C? Assumed : density, 0.997 g/mL , specific heat, 4.184 J/(g⋅K) ,

Solved • Mar 16, 2019

The Particle Nature of Light

Q. Consider light with a photon energy of 4.26 x 10-19 J. What is the frequency of light with this photon energy?

Solved • Mar 6, 2019