Q8. The immediate environment of an accelerator or reactor contains large fluxes of gamma rays of energies in the vicinity of 5-10 MeV. What thickness of lead is required to reduce the photon intensity by a factor of 10¹2

Q: Calculate the shortest wavelength of light emitted by the hydrogen atom.

A: Wavelength

Q: 7. An electron, traveling at a speed of 6.00 x 106 m/s, strikes the target of an X-ray tube. Upon…

A: We apply conservation of momentum before and after electron strikes the target mev1=mev2+px-ray now…

Q: A narrow beam of 0.5 MeV photons is incident normally on a 3 mm iron slab. What fraction of the…

A: Given data: The energy of the photon is E=0.5 MeV. The thickness of the slab is t=3 mm. The mass…

Q: A small space yacht, mass 9.15X10' kg, is passing hear a large star wnen Iits englnes suddenly fall.…

A: Concept used: Photons strike the surface at speed of light to propel and basic kinematics is used.

Q: calculate the frequency in hertz of a 1.0 0 MEV Y Ray photon.    *10^20 Hz

A: This question is based on formula E=hν

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: X-rays are generated in a classic tube television, which has a voltage of 30 kW applied to its…

A: Which two fundamentally different processes mainly cause this X-ray radiation? Which of the two…

Q: Explain single-photon-emission computed tomography(SPECT).

A: Given: An explanation of the SPECT is given as,

Q: 4- 1R of X-ray radiation in the energy range of 0.1-3 MeV produces how many rads in muscle tissue?…

A:

Q: 2.8 pm photons interact with free electrons from a carbon target. what will be the energy minimum…

A: Given: The wavelength of the photon is λ = 2.8 pm The mass of an electron is m0 = 9.1 x 10-31 kg The…

Q: 8. The quantum noise in x-ray imaging obeys Poisson distribution: NK e-N PK K! where: P is…

A: We have given the probability in possion distribution for X ray imaging. We want to calculate the…

Q: An alpha particle has a matter wavelength of 1.89 mA. Calculate its speed.

A:

Q: excitation of a He+

A:

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: A 900WX-ray tube operates at a DC potential difference of 30kV. Calculate the minimum wavelength of…

A: Given: The power of the X-ray tube is 900 W. The DC potential difference is 30 kV. Introduction:…

Q: A small space yacht, mass 5.92x10* kg, is passing near a large star when its engines suddenly fail.…

A: given, mass, m=5.92x104kg L=5.1km solar constant, s=8.94x104W/m2

Q: . i. Calculate the maximum wavelength λmax of electromagnetic radiation that could eject electrons…

A:

Q: b). Which interaction is most useful for producing a diagnostic X-Rays image: photoclectric effect,…

A: X-rays are electromagnetic waves having wavelength ranging from 10 Pico meters to 10 nanometers,…

Q: 4) A photon with a wavelength of 0.012 A disappears as it passes around the gold nucleus of an…

A: please see the next step for solution

Q: electric threshold for certain metal is 3500nm . Determine the maximum energy of the ejected photo…

A: Given data: Threshold wavelength =3500 nm Incident wavelength =2000nm

Q: C4. In mammography, a 10-g molybdenum (Z = 42) target is irradiated by an X-ray beam source whose…

A:

Q: 8. Now, as we decrease the brightness of the light, record the # electrons and detection time, and…

A: Here, the given data is the value of the electron detected and the detection time at different…

Q: Suppose our E-field measurement has an uncertainty of 0.25 kV/m and our radius of curvature…

A:

Q: The first line in the Lyman series of H is at 82257.098 cm-1, while that line in the spectrum of…

A: Rydberg formula is used to calculate the wavelength of the spectral line formed during atomic…

Q: A 662-keV photon is Compton scattered at an angle of 120° with respect to its incident direction.…

A:

Q: 8. 5 HVLS will decrease the radiation intensity to what percentage of the original?

A:

Q: Integrate e 8πν -hv/kT c³ (1-e-hv/kT dv to obtain the expression for number of photons, N. dN =…

A:

Q: In an photoelectric effect 0.500 moles of electrons are accelerated with the total speed of 3.61 x…

A: The photoelectric effect is a phenomena in which light causes electrons to be expelled from a…

Q: Consider a cavity of size V, which is kept at a temperature T. We call N(w) dw the number of photons…

A:

Q: Compute a rough estimate of the number of photons emitted each second by a 100-W lightbulb. You…

A: The power of the bulb is 100 W. Here we use the temperature as 3000 K.

Q: positrons, a certain ever terpreted as annihilation of an electron-positro of total energy 10.2BeV…

A: Wavelength can be defined as the distance between two successive crests or troughs of a wave. Here,…

Q: Two photopeaks due to two g-rays of energies 1172 keV and 1332 keV of 60Co falls on channels 2871…

A: Given: Two g rays of energies 1172keV and 1332keV of 60CO Channels 2871 and 3264

Q: If approximately 1% of the electric energy ends up in the x-ray beam ( a typical value), what is the…

A: Given: Potential Difference,V=70kV=70×103VCurrent,I=10mA=10×10-3ATime,t=0.75s Electrical energy is…

Q: 6. When photons with a wavelength of 120.0 nm are incident on a metal, electrons are ejected that…

A:

Q: 4. Numerical Question. The star Betelgeuse has a mass of about 18 Me and a radius of 800 Re. How…

A: Given: M=18 Me R=800Re

Q: ) Calculate how many photons are emitted in each minute in a UV laser source, which emits light at a…

A:

Q: a) If the intervening tissue has a thickness of 5 mm, calculate the fraction of the 20- keV…

A: Given: A dentist places the window of a 100 kVp (100-kV , peak voltage ) The inverting tissue has a…

Q: photons are incident on a 2 mm lead shield. a) What is the fraction uncollided flux exiting the…

A: Given:- A beam of 1.2 MeV photons are incident on a 2 mmm lead shield  Find:- a) What is the…

Q: 7. If x-ray photons with intensity of 10 W/m2 of energy 70 keV travels through 3 cm of skeletal…

A: Given,I0=10 W/m2E=70 keVx=3cm

Q: what is the difference in wavelength between (electron and neutron nd x-rays)

A: The wavelength of an electron is dependent on the voltage or energy used to accelerate it.

Q: 3. A beam of protons, each with energy E = 20 MeV, falls on a potential step of 40 MeV. Graph the…

A:

Q: An x-ray photon with an initial wavelength of 10 nanometers collides with an electron and scatters…

A:

Q: given below. Scattered x-rays X =2 cm (Attenuated) Transmitted) |-100 CPS detector X-ray ,=1200 CPS…

A: Initial intensity of the X-rays, I0=1200 CPS After travelling a distance of x=2 cm , the intensity…