Table of Contents
- 1 What is energy and frequency of wave whose wavelength is 400 nm?
- 2 What is the energy of a photon of wavelength 450 nm?
- 3 Which two wavelengths have the highest frequencies?
- 4 What is the frequency of a light wave with a wavelength of 450 nm?
- 5 Which is the energy per photon of a photon?
- 6 How is the energy of light related to the wavelength?
What is energy and frequency of wave whose wavelength is 400 nm?
Violet light has a wavelength of ~400 nm, and a frequency of ~7.5*1014 Hz. Red light has a wavelength of ~700 nm, and a frequency of ~4.3*1014 Hz. Visible light makes up just a small part of the full electromagnetic spectrum.
What is the energy of a photon of wavelength 450 nm?
2.5×10-17J.
What is the energy of a 420 nm photon?
A light wave has a wavelength of 420nm, calculate the energy of this wave in joules. E = ((6.63 x 10-34)x(3.0 x 108))/(420 x 10-9)E = 4.74 x 10-19J leaving the answer as this is in Joules already.
How do you find the energy of a photon given the wavelength?
Photons have no mass, but they have energy E = hf = hc/λ. Here h = 6.626*10-34 Js is a universal constant called Planck’s constant. The energy of each photon is inversely proportional to the wavelength of the associated EM wave.
Which two wavelengths have the highest frequencies?
Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.
What is the frequency of a light wave with a wavelength of 450 nm?
The frequency of blue light that has a wavelength of 450 nm is 6.7×1014 6.7 × 10 14 Hz.
What is the rest mass of a photon?
zero
The photons are said to be chargeless and massless particles that travel at the speed of light. So the rest mass of a photon is taken to be zero. This can be proved from Einstein’s special theory of relativity. Hence the photons have a rest mass of zero.
What is the energy of a 500 nm photon?
Question: The energy of a 500 nm photon is 4 x 10−19 J.
Which is the energy per photon of a photon?
This is the energy per photon. This is the energy per photon. This is the energy per photon. This is the energy per photon. This is the energy per photon. This is the energy per photon. This is the energy per photon. This is the energy per photon. This is the energy per photon. This is the energy per photon.
The energy of light (or photon energy), E, is inversely proportional to the wavelength by the equation: E = hc/ l (equation 1) where h is Planck’s constant (6.6261 x 10 -34 J*s) and c is the speed of light (2.9979 x 10 8 m/s). Photon energy can be expressed using any unit of energy such as the electronvolt (eV) or the Joule (J).
How is power related to the rate of photon flux?
Power (P) is the rate of energy transfer with the SI unit of 1 Watt = 1 J/s. The power of short wavelength light sources in the EUV to X-ray range are often expressed as photon flux ( F) in the units of photons per second (ph/s). Average power is related to flux and photon energy by:
How to find the quantum numbers of an electron?
Therefore if your measurement in joules is for one particle, the conversion to kJ/mol (or in other words, the energy in one mole of particles as oppose to just one) is: How can I find the quantum numbers of an electron?