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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.
Lenz's law (H.F. Lenz; 1835): An induced electric current always pass in such direction that it opposes the change generating it.
illustrate the situation. the child is on the slide
Q The refractive index of a medium is √3. Compute the angle of refraction if the un-polarised light is incident on it at the polarizing angle of the medium. μ = tan i p = √3
make reasoning questions from motion in 1 and 2 dimensions
Q. Define roentgen and activity and Curie? One roentgen (1R) is described as the quantity of radiation which produces 1.6 × 10 12 pairs of ions in 1 gram of air. The activi
What is waveguide dispersion in optical fibres? Waveguide dispersion (Δτ w ): Waveguide dispersion occurs because of the dependence onto the velocity of propagation of every
The substances which can be stretched to big values of strain are known as elastomers. e.g. elastic tissue of aorta, the main artery carrying blood from the heart.
Q. What is the use of control rods? Mention any two control rods. The control rods are utilized to control the chain reaction. They are extremely good absorbers of neutrons. Th
a) Describe how capacitance of a capacitor depends on area, distance among the plates and on the dielectric material. b) Draw electric field lines of a (i) positive poin
Q. Define: rms value of AC. RMS value of a.c. The rms value of alternating current is described as that value of the steady current which when passed through a resisto
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