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For each element the number of neutrons in the nucleus can vary.
Isotopes :Nuclei of given element with different numbers of neutrons.If they are not radioactive they called stable isotopes, and if they are radioactive they are called radioisotopes, for example carbon has two stable isotopes (12C and 13C ) and several radioisotopes (e.g. 11C,14Cand 15C).
In a modern hospitals about one third of the patients have a nuclear medicine study of some type .Although many nuclear medicine tests are concerned with the detection of cancer ,others are used to detect problems of heart ,lungs, kidneys and joints.The most useful radionuclide for nuclear medicine are those that emit gamma rays
When a body or a moving particle repeats its motion along an exact path after regular parts of time, its rotation is said to be Periodic Motion and interval of time is known as per
Dispersion of Light: When a beam of light is permitted to pass by a prism, it splits in a band of different colors. This band of different colors is known as spectrum and the p
In the device shown in Figure, when the current in the primary coil of 1000 turns increases linearly from 1A to 6A in 200ms, an e.m.f. of 15V is induced into the secondary coil of
Q. What is the longest lasting synthetic periodic element? Answer:- A excellent candidate would be curium 247 (247Cm) which has a half-life of 1.56 × 107 year
In a Wheatstone bridge PQRS, a galvanometer is connected among Q and S and a voltage source between P and R. An unknown resistor Rx is connected among P and Q. When the bri
Explain Constant current system Constant current system : - In this process, the charging current is kept constant by varying the supply voltage to overcome the enhanced back
How do we measure the height of a house
PN-Junction Diode: Introduction: An electronic device which is made by linking together P-type semi-conductor and N-type semiconductor is known as p-n junction diode or a
Q. A managing wire of length 2m has a diameter of 0.4 mm with a resistance of 70 ohm. Find its resistivity. ρ = ( P X πr 2 ) / L = ( 70 X 22 X 2 X 10 -4 X 2
Newton 2nd law of motion proof
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