It has a high atomic number to improve the efficiency of bremsstrahlung x-ray production .A Tungsten is required .B copper rod .C Thermionic emission .D All choices are not correct
Q: What is the wavelength, in nm, of a 1.73-eV photon? Normal format with 4 SF. Hint: 1 eV=1.60×…
A: Given: The energy of the photon is, E=1.73 eV. Standard values: The Planck's constant is,…
Q: A Ale.35GA0.65AS/GaAs/Alo.35GA0.654s pn" DH LED made of very high quality semiconductors has a…
A: Given data: The voltage across LED is V=2 V The current injected at the biased voltage is I=66 mA…
Q: 2. are -6.00 eV, -4.00 eV, and -1.00 eV. The allowed energy levels of a hypothetical hydrogenic…
A:
Q: Give an example of an application that involves the absorption of X-rays. Describe what happens on a…
A: X-rays are produced by bombarding a heavy metal target with high energy electrons. Choice of heavy…
Q: 3. A 6-stage photomultiplier tube has a dark current of 2 nA. The secondary emission ratio of each…
A: Given information: A 6- stage photomultiplier tube has a dark current of 2 nA. The secondary…
Q: The wavelength of H. line of Balmer series is 6560 A. Calculate the wavelength of the first line (1)…
A:
Q: 2. The photoelectric attenuation coefficient in lead at 150 keV is 620x10-28 m²/atom. Assuming that…
A: Given, Attenuation coefficient, μ=620×10-28m2/atom The density of lead, ρ=11360kg/m3 Number of atoms…
Q: 1. Neutrons produced in a reactor are known as thermal neutrons because their kinetic 3 energies…
A:
Q: A simple Ge n-i-n photo-detector sample has a length of L= 30 um and a hole lifetime of Tp 0.4 us.…
A: Given : τp=0.4×10-6s V=2V L=30×10-6m μn=3900×10-4m2/V-s…
Q: 16- A photodiode with a energy gap of 2.35 eV. It operates at 300 K and If it is illuminated by…
A: Concept used: Photodiode works on principle of converting light energy to electric energy. A…
Q: When a photoconductor is exposed to light a. less current flows through it b.its resistance…
A: A photoconductor is a semiconductor device. It carries current when it is exposed to light.
Q: Q 22. In a photochemical reaction A → B + C , the quantum efficiency with 500 nm light is 1.2×…
A: The given photochemical reaction is A→B+C According to the stoichiometry of the reaction, it is…
Q: A stabilized He-Ne laser operates at a wavelength of λ=632.8 nm and has a bandwidth of Δν=1 kHz. The…
A: Given: The He-Ne laser operates at a wavelength of λ=632.8 nm The bandwidth of the laser is Δν=1 kHz…
Q: How would the number of photons emitted per second by a yellow Kr laser compare to the number…
A: The energy of the red photon is less than that of yellow photon. Since both the lasers have the…
Q: 17. A slab of intrinsic GaAs, 3 cm long, 2 cm wide, and 0.3 cm thick is illuminated by a…
A:
Q: 3. The alloy indium gallium nitride InxGa₁-xN can be used to make a photodetector. Its band gap (in…
A:
Q: 1. Consider a Nd:YAG laser that is pumped with a diode laser. The configuration of this laser is…
A: Given, Length, l=5cm Reflectivity, r1=1r2=0.95 The loss coefficient, α=5%α=0.05 a. The small…
Q: A phosphor material absorbs photons at 460 nm and luminesces at 674 nm. A) Calculate the amount of…
A:
Q: 3. The cathode of a photocell is connected to the negative voltage, the anode to the positive…
A:
Q: C4. In mammography, a 10-g molybdenum (Z = 42) target is irradiated by an X-ray beam source whose…
A:
Q: CnupA 2. You can determine a Lorenz constant from the Sommerfeld model. Using k =CnvFA = CnuT, the…
A:
Q: 4. Which requires the larger relaxation allowance: a noise level of 100 dB with 5 hours of exposure,…
A: Introduction: The relaxation phenomenon is an effect related to the delay between the application of…
Q: Which one of the following statements is incorrect concerning the X-ray spectra (see figure)? a The…
A: The X-Rays are produced to the phenomenon where an electron from a higher level energy state loses…
Q: You are trying to identify some elements by using Moseley approach i.e. by observing their…
A: Moseley basically derived his formula by plotting the graph between square-root of frequency with…
Q: infrared photon is absorbed by a hydrogen atom. A transition in which spectra series could account…
A:
Q: Q.36/ For three different metals A, B, C photo-emission is observed one by one and maximum kinetic…
A: The graph between kinetic energy and frequency of incident light
Q: Which of the effects listed below are considered to be the main limiting factors for increasing the…
A: Bandgap of the semiconductor forming the photoelectrode. Bandgap determines the number of free…
Q: 4. Band gap and photodetection:
A:
Q: B. A laser with power output of 2.0 mW at a wavelength of 400 nm is projected onto a Calcium metal.…
A: Part (i) Given: The power output of laser is P=2.0 mW. The wavelength of light is λ=400 nm. The…
Q: 3. For an active medium of length L=10cm and having lasing atoms with cross section area and…
A: Given, Length, L=10cmL=z=0.1m σ(N2-N1)=0.1cm-1σ(N2-N1)=10m-1 Initial photon flux,F0=1×1020s-1 The…
Q: Q3. Consider an n-type silicon photoconductor which is 0.1 cm long, 1µmthick and 50 umwide. If the…
A: Given: An n type silicon photo conduction value is 1μm thick, 50 μm wide. The longitudinal dimension…
Q: 4. The aside curve is the optical transmission spectrum of CdS film as a function of wavelength. The…
A:
Q: 1. Consider a commercial power laser diode with an emission wavelength of 730nm. The threshold…
A: We know that the external quantum efficiency is given by, ηEQE=Number of output photons from the…
Q: Session 19464797 multiple choice question = R 2 A 1 B. 2 In the equation above, which value of n'…
A:
Q: plz with reason 3- Dark current increases the sensitivity of the photodiode to light a. True b.…
A: Dark current referred as the small current flowing through the photosensitive devices when there is…
Q: What is the wavelength, in nm, of a 1.74-eV photon? Normal format with 4 SF. Hint: 1 eV = 1.60×…
A:
Step by step
Solved in 2 steps
