Determine The Change In The Radiation Intensity And Xma. Of The Thermal Radiation From A Black Body If Its Temperature: Quantum Physics Assignment, NTU, Singapore
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| University | Nanyang Technological University (NTU) |
| Subject | Quantum Physics |
- Determine the change in the radiation intensity and Xma. of the thermal radiation from a black body if its temperature increases from 1000 “C to 1001 °C.
- An incident energetic photon is scattered by a free electron initially at rest. If the scattering angle of the scattered photon is 90° with respect to the incident photon propagation direction and the scattered photon energy is 0.100 MeV, determine the wavelength and momentum of the scattered photon and the incident photon, respectively.
- A beam of ultraviolet light with a wavelength of 250 nm is incident on a metal whose work function is 2.8 eV. Note that +1.5 V is applied to the metal with respect to the photoelectron detector. Determine the most significant kinetic energy of the photoelectrons collected by the sensor.
- Explain the physics behind the fourth assumption in Bohr’s atomic model, i.e., mevr=nh/2π, where I and v are the mass and velocity of an electron around the nucleus, respectively, r is the radius of an allowed orbit, n is the integer and h is the Plank constant.
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