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Calculate number of photons emitted by 100W yellow lamp in 2secthe wavelength of yellow light is 560nm?
The formula is energy is equal to power times time. This would be 100 W times 1s which equals 100 Joules per second times 1 second which is equal to 100 Joules. 560 nm for lambda, v equals c divided by 560 nm which equals 5.4 by 10 to the 14th power which equals Hz. 1 photon equals E equals hv equals 6.626 times 10 up to the negative 34th power Joules per Hz times 5.4 times 10 up to the 14th Hz which equals 3.7 times 10 up to the negative 19 Joules. The answer is 100 J which equals 100 J divided by 3.7 times 10 up to the negative 19th power J which equals 2.7 times 10 up to the 20th power.
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Do hotter objects emit photons with a shorter wavelength?
Yes, hotter objects emit photons with a shorter wavelength. This is known as Wien's displacement law, which states that the peak wavelength of radiation emitted by an object is inversely proportional to its temperature. As the temperature of an object increases, the peak wavelength of the emitted radiation shifts to shorter wavelengths.
All of its output energy is absorbed in a detector that measures a total energy of 0.53 J over a period of 32 s How many photons per second are being emitted by the laser?
To calculate the number of photons per second emitted by the laser, we first need to find the power of the laser. Power is given by energy divided by time, so 0.53 J / 32 s = 0.01656 Watts. Next, we need to convert this power into the number of photons emitted per second using the relationship (E = n \cdot h \cdot f), where E is the energy of a single photon, n is the number of photons per second, h is Planck's constant, and f is the frequency of the photons emitted by the laser.
What is the term for the small packets of energy emitted from light?
The term for the small packets of energy emitted from light is called photons.
Why spontaneous emission is incoherent?
During spontaneous emission, photons are emitted randomly and hence they will not in phase with each other. such light is irregular and mixed of different frequencies,direction and duration.therefore the beam of light emitted is incoherent.sudhir tiwari.sharda university
What light is only one color?
Monochromic light can be photons in a narrow energy range emitted by a laser. Sunlight looks uniform but it is actually composed of all of the wavelengths of visible light (except for a few that have been absorbed in the atmosphere).
Do hotter objects emit photons with a shorter wavelength?
Yes, hotter objects emit photons with a shorter wavelength. This is known as Wien's displacement law, which states that the peak wavelength of radiation emitted by an object is inversely proportional to its temperature. As the temperature of an object increases, the peak wavelength of the emitted radiation shifts to shorter wavelengths.
How many electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent?
The number of electrons emitted when calcium is flashed with light of a certain wavelength and intensity depends on the photoelectric effect, which is related to the energy of the photons hitting the metal. Without the energy of the photons and the work function of calcium, we cannot determine the number of electrons emitted.
How do you calculate the energy of the photons released to make a line in an atomic emission spectrum?
The energy of the photons released during an atomic emission spectrum can be calculated using the equation (E = h \nu), where (E) is the energy of the photon, (h) is Planck's constant ((6.626 \times 10^{-34} , \text{J s})), and (\nu) is the frequency of the emitted light. The frequency can be related to the wavelength ((\lambda)) of the light using the equation (\nu = \frac{c}{\lambda}), where (c) is the speed of light ((3.00 \times 10^8 , \text{m/s})). By measuring the wavelength of the emitted light, you can determine its frequency and subsequently calculate the energy of the photons.
A photon of wavelength 3000 A is absorbed by a gas and remitted as two photons One of the photons is red 7600 A What is the wavelength of the other photon?
The total energy of a photon with a wavelength of 3000 A is divided into two photons, one red photon with a wavelength of 7600 A, and another photon with a shorter wavelength. To calculate the wavelength of the second photon, you can use the conservation of energy principle, where the sum of the energies of the two new photons is equal to the energy of the original photon. This will give you the wavelength of the other photon.
All of its output energy is absorbed in a detector that measures a total energy of 0.53 J over a period of 32 s How many photons per second are being emitted by the laser?
To calculate the number of photons per second emitted by the laser, we first need to find the power of the laser. Power is given by energy divided by time, so 0.53 J / 32 s = 0.01656 Watts. Next, we need to convert this power into the number of photons emitted per second using the relationship (E = n \cdot h \cdot f), where E is the energy of a single photon, n is the number of photons per second, h is Planck's constant, and f is the frequency of the photons emitted by the laser.
What is the term for the small packets of energy emitted from light?
The term for the small packets of energy emitted from light is called photons.
Why spontaneous emission is incoherent?
During spontaneous emission, photons are emitted randomly and hence they will not in phase with each other. such light is irregular and mixed of different frequencies,direction and duration.therefore the beam of light emitted is incoherent.sudhir tiwari.sharda university
Why are the photons that emerge from the Sun's surface visible-light photons and infrared-light photons rather than gamma-ray photons?
Photons do not come in different types like infared-photons etc. they are just the wavelength that the photons are at and nuclear fusion just happens to emit photons at a particular wavelength
What light is only one color?
Monochromic light can be photons in a narrow energy range emitted by a laser. Sunlight looks uniform but it is actually composed of all of the wavelengths of visible light (except for a few that have been absorbed in the atmosphere).
What is the no of photons of light with wave 4000 pm that provided 1J energy?
To calculate the number of photons, you can use the formula: Energy of 1 photon = hc / λ where h is Planck's constant, c is the speed of light, and λ is the wavelength. From this, you can determine the energy of one photon of light with a 4000 pm wavelength and then calculate the number of photons required to provide 1 Joule of energy.
When light is emitted as particles it is called?
When light is emitted as particles, it is called photons. Photons are the basic unit of light and have properties of both particles and waves.
What happens to the energy of photons if the wavelength of light is doubled?
When the wavelength of light is doubled, the energy of photons decreases by half.
