How do you calculate the number of photons emitted per second?
According to the equation E=n⋅h⋅ν (energy = number of photons times Planck’s constant times the frequency), if you divide the energy by Planck’s constant, you should get photons per second.
How do you calculate the energy of a photon emitted?
Photons velocity equals the speed of light. Photons are massless, but they have energy E = hf = hc/λ. Here h = 6.626*10-34 Js is called Planck’s constant. The photon energy is inversely proportional to the wavelength of the electromagnetic wave.
How many photons are in a beam of light?
Photons are light. One photon equals one unit of light. A light source can send one photon or many trillions or billions of photons.
What is the relationship between the number of photons and the intensity of light?
In the particle model of light, a higher intensity (brighter light) means more photons. Technically, we should say that a higher intensity corresponds to a greater number of photons passing through a given area in a given amount of time.
How many photons are emitted per second by a 5mw?
Thus the number of photons emitted per second =3.
How many photons per second does the light emit?
The answer is approximately 10^45 photons every second.
How many photons are emitted per second by a 10mw?
Approximately 3.15 * 10^(16) photons per second.
How many photons does a laser emit per second?
A laser pointer typically has a power rating of 1 mW, or 0.001 Joules per second. This means that every second a laser pointer emits a number of photons equal to (3.2x1018photons/J)(0.001J/s) = 3.2×1015 photons/s.
How many photons hit the Earth every second?
How many reach earth? If we use the 1e45 figure for photons/sec emitted by the Sun, then you get ~1.8e36 photons striking the Earth per sec and 4.4e16 photons per sec hitting the eye (assuming a pupil diameter of 2mm.)
Is intensity photons per second?
intensity is the number of photons incident in a second on a unit area ( more accurately it is the energy per unit area per unit time), while frequency refers to the frequency of the photon when referred to as a wave which is the number of waves per second.
Which of the following refers to the number of photons per unit area and time emitted from a light source?
Intensity is the total amount of energy falling on (or going through) a surface/region per unit area A per unit time t and therefore measured in J/(m2s). For monochromatic radiation, the total energy emitted equals the number of photons n times the energy of one photon, hν.
According to the equation E=n⋅h⋅ν (energy = number of photons times Planck’s constant times the frequency), if you divide the energy by Planck’s constant, you should get photons per second. Eh=n⋅ν → the term n⋅ν should have units of photons/second. Click to see full answer. Furthermore, how do you calculate the number of photons emitted per second?
How much energy does it take to take out one photon?
Correct option is C 2.67×1019. P = 10 W(given) this means E in 1 sec = 10 J % used to convert into photon = 90% (given) ∴Energy used = 9 J Energy used to take out 1 photon = hc/λ = 6.63* 10-34* 3 * 108/590 * 10-9= 6.633/590 * 10-17
What is the wavelength of light emitted by a 100-watt bulb?
A 100 watt bulb emits monochromatic light of wavelength 400 nm. Calculate the number of photons emitted per second by the bulb. Was this answer helpful?
What is the potential difference of a photoelectric cell?
A photoelectric cell is connected to a source of variable potential difference, connected across it and the photoelectric current resulting (μA)is plotted against the applied potential difference (V). The graph in the broken line represents one for a given frequency and intensity of the incident radiation.