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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
what happens to a conical pendulum when the bob splits into two parts such that one part remains attached to the string?
With the help of a circuit diagram, explain how regenerative feedback is provided in an Hartley oscillator?
The main constituents of glass is (A) SiO 2 (B) B 2 O 3 (C) Al 2 O 3 (D) Cr 2 O 3 Ans: The main constituents of glass are SiO 2 .
QUESTION 1 A car of mass 800 kg is pulling a trailer of mass 300 kg up the slope of angle ? to the horizontal where sine ? = 1/200. Resistance to motion (apart from gravity) is 1.
Forward Bias: When p-type material of a semiconductor diode is linked at positive potential and the n-type material is linked at negative potential of a voltage source, the dio
Micanite is a form of (A) Built up mica. (B) Hydrated potassium aluminium silicate. (C) Magnesium mica. (D) Calcium mica. Ans: Micanite is a form of Buil
What is seebeck effect. Illustrate how thermo emf varies with temperature in a thermocouple, describe neutral and invertion temperature. What are Thomson effects and Peltier? D
The refractive indices of a double refracting crystal for extraordinary and ordinary ray are 1.584 and 1.592 respectively for wavelength 5600A 0 . Calculate the thic
Q. Cue Ball Slip Problems? A cue ball is struck beside a line through its centre and parallel to the table. It moves forward primarily with zero angular rotation, sliding acros
Adding 3 Vectors A simple demonstration of adding 3 vectors graphically. Also elaborates in which vector addition is relative.
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