3. Which of the following statement is correct? A. Violet is less energetic than blue B. Yellow is brighter than orange. C. Orange is energetic than red D. Visible light may different frequencies but of the same energy

Q: 1. Bohr's Model can be used to find the wavelengths of the photons in the absorption or emission…

A:

Q: Q4: Calculate the energy momentum and de Bröglie wave length of electron accelerated from rest by…

A: Given: Electron is accelerated from rest by V = 200 V

Q: 7. What is the maximum wavelength of light that will cause photoelectrons to be emitted from sodium?…

A: Recall hcλ=ϕ+KEmaxWhere ϕ=work function            λ=wavelength

Q: Determine the wavelength of an electron with a kinetic energy of 50 eV.

A: Given  Kinetic energy of electron KE = 50 eV = 50 x (1.6 x 10-19 ) J

Q: a) Calculate the frequency (in s-1) and the energy (in J) of a photon with the wavelength of 170 nm.…

A: Wavelength of photon (λ) = 170 nm = 1.7×10-7 m

Q: Explain what the photoelectric effect is. How does it work. What kind of light must be used? Why? If…

A: The photoelectric effect is a phenomenon in which electrons are ejected from the surface of a metal…

Q: 7. Which of these will affect the stopping potential in a photoelectric experiment? (select all that…

A:

Q: A firefly glows by the direct conversion of chemical energy to light. The light emitted by a firefly…

A:

Q: Photons of a certain ultraviolet light have an energy of 6.75 10-19 J. (a) What is the frequency of…

A:

Q: 1. All objects radiate energy. Why, then, are we not able to see all the objects in a dark room?…

A: Answer (1)  Our eyes are not sensitive to infrared radiation therefore they do not see it. We know…

Q: 1) Determine the frequency and wavelength for a photon for a transition from level 6 to level 4 in…

A: In this question we have to determine the de Broglie wavelength of the electron in level 4. Please…

Q: 8. In the photoelectric effect, the work function is a) the amount of energy required to release an…

A: Work function is the  energy required to withdraw an electron completely from a metal surface. This…

Q: Q3) Find the wave length of the electromagnetic radiation, which emitted from an atom, when two…

A: SOlution: given that teh eelctron jumps from 6th to 3rd and another jumps from infinite to 2nd the…

Q: (13%) Problem 8: Consider a photon with wavelength 0.021 nm. Randomized Variables 1 = 0.021 nm 50%…

A:

Q: 1. An electron initially moves in first excited state, if it absorb energy with frequency 5x10 Hz.…

A: Solution: to find the momentum of electron before and after

Q: 5) The energy levels of a quantum mechanical system are given by the equation: En hfo f = 10*Hz n =…

A:

Q: Example1: A sodium surface is illuminated with light of wavelength o.300 um. The work function for…

A: The energy of a photon is given by  E =h cλ where, h is the Plank's constant, c is the speed of…

Q: 5.40x106 atoms are excited to an upper energy level at t = 0 s. At the end of 30.0 ns , 90.0% of…

A: According to question we have to find--- How many photons have been emitted? What is the lifetime…

Q: need help with a-c

A: Given values:

Q: 6. An electron, starting from rest, accelerates through a potential difference of 25.0 V. What is…

A: The work done by the electric field on the electron through the potential difference of U = 25.0 V…

Q: 1. Bohr's Model can be used to find the wavelengths of the photons in the absorption or emission…

A: We know that, Wavelength of the photon of emission spectrum is given by, 1λ=RH1n22-1n12 Where, RH is…

Q: You have a sample of Sodium with a Work Function of 2.28 eV that you are shining light upon to…

A:

Q: 22. 750 nm light is shone on a metallic surface with a work function of 1.5 eV. a) Find the energy…

A:

Q: Electrons are ejected from a metallic surface with speeds ranging up to 5.0 x 10 m/s when light with…

A:

Q: Ex1 / The minimum wave length for photoelectric emission in tungsten is 230nm. What wave length must…

A: 1 nm = 10-9 m  1eV = 1.6× 10-19 J

Q: 1. An electron initially moves in first excited state, if it absorb energy with frequency 5×10" Hz.…

A: Scenario: Energy is absorbed by e- initially when it jumps in first excited state. Given: Frequency,…

Q: A hydrogen atom is initially in the n- 6 state. It drops to the n- 2 state, emitting a photon in the…

A: Given: The intial state is 6. The final state is 2.

Q: 1. You have orange light with a wavelength of 615 nm. a. What is the frequency of this light? b.…

A: 1) The given wavelength of the orange light is λ = 615 nm = 6.15×10-7m  Required : the wave…

Q: A certain metal has a work function of 3.06 x 1019 J Light with a wavelength of 450 nm shines on the…

A: Work function The minimum energy required to produce photo-emission of electrons is called the work…

Q: A 75 W light source consumes 75 W of electrical power. Assume all this energy goes into emitted…

A: P = 75 W  wavelength = 600 nm

Q: 12.) Light is incident on a photoelectric apparatus made with sodium plates. The distance between…

A:

Q: 12. A surface of zinc is illuminated and photoelectrons are observed. (a) What is the largest…

A: work function(ϕ) for zinc is 4.31 eV formula h is Planck constant c is speed of light λmax is…

Q: 2. A photon has a frequency of 7.50 x 101ª Hz, a. Determine the energy and the momentum of this…

A: Given,  Frequency of photon f = 7.50 x 1014 Hz   So the energy and the momentum of the photon is  We…

Q: 9. Considering the photoelectric effect; a) If a material has a cutoff wavelength of 780 nm what is…

A: Given that Cutoff wavelength λ0 = 780 nm

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.