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Solid state simeconductor
It is main advantage is that it has much better resolution than NaI(Tl)It is main disadvantages are that it is not available in large sizes and it is much more expensive.
The principle of operation :its acts as a solid ionization chamber so it acts as an insulator and dose not allow current to flow until ionization has taken place in its volume. It kept very cold to minimize the current produced by thermal activation of electrons.
Collimator: it is used on the scintillation detector to limit its counting volume. It is a specially designed lead shield with one or more holes in
It has two types:1 – The open flat field collimator: it is useful for detecting gamma rays from a relatively large volume such as the thyroid or kidney.2- The focused collimator : it has a number of trapped holes oriented to point at a small volume 7.5 to 12.5 cm from it , it is often used in nuclear medicine
A simple pendulum of frequency f has a metal bob.If the bob us negatively charged and is allowed to oscillate with a posively charged plate under it , the frequency will.? Ans) DUE
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
Each physical system has related with it a certain point whose motion characterizes the motion of the whole system. When the system goes under some external forces than this point
DC voltage measurements: Examples of how to make DC voltage measurements are show in the two diagrams below. In both cases, the red and black test leads are connected to the '
is there any Law of Physics acting in a weighted object placed in a corrugated paper and the paper can actually support it well thanky you :)
Eddy currents can be briefly explained as currents produced due to induced emf in the form of eddies or ripples. Hysteresis laws mainly consists of 2 topics retentivity and coerci
Q. What are the limitations of electron microscope? An electron microscope is operated merely in high vacuum. This prohibits the utilize of the microscope to study living organ
This is due to the surface tension of water. Because of the surface tension , the drop tends to have minimum possible surface area, and the shape which is possible with minimum su
Q. How greatly does sea salt weigh per cubic foot? Answer:- Sodium chloride NaCl weighs 72 lb/ft 3 .
Q. Why can a DC ammeter not read AC? a) Dc ammeter can't measure ac because ac is changing continuously and periodically as well as a dc ammeter can just measure a constant cur
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