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1. Consider two monoenergetic photon beams with the same photon fluences. In one beam the photons are 100 keV and in the other they are 1 MeV. Determine the most appropriate relation between both exposures (X).
2. Electrons with kinetic energy of 1.0 MeV have a speci c ionization in air of 6000 IP/m whereas alpha particles of 2.0 MeV have an LET in air of 0.175 keV/μm. What value is closest to the ratio LET(alphas)/LET(electrons) in air.
Reflection law For a wavefront intersecting reflecting surface, the angle of incidence is equivalent to the angle of reflection, in the similar plane described by the ray of i
what is ampere sarcutal law
The amplified video signals are amplitude modulated using a suitable r.f. carrier wave in a transmitter called ‘AM' picture transmitter. Similarly, the amplified audio signals are
How does laser printer works? When a text or image is entered into the CPU, it makes a series of varying voltages. This controls a LED (light emitting diode) in the printer. Th
Ampere; A (after A.M. Ampere, 1775-1836) The basic SI unit of electric current, described as the current that, while going through two infinitely-long parallel conductors of ne
A 240-turn solenoid having a length of 21 cm and a diameter of 8.8 cm carries a current of 0.44A. Calculate the magnitude of the magnetic field inside the solenoid.
Medicines: 1. Iodine 131 is used for the study of thyroid glands. 2. Radiation in low dosage can also be used for sterilizing bandages. 3. Radio-Cobalt-60 has been widely
In the figure below the closed surfaces A and B appear as closed curves. Find the flux through closed surface B.
Radio active series There are three radio active series depending on their progenitor. They are i) Uranium series called (2n+2) series, ii) Actino-Uranium series, call
A dual-wavelength spectrometer uses 780 nm and 830 nm. The molar extinction coefficients for oxy-hemoglobin (HbO 2 ) and deoxy-hemoglobin (Hb) at these two wavelengths are: e_HbO 2
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