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Q. What is artificial radioactivity?
The phenomenon by which still light elements are made radioactive by artificial or induced methods is called artificial radioactivity.
α-decay When a radioactive nucleus disintegrates by release an α-particle the atomic number decreases by two and mass number decreases by four.
Instance Radium (88Ra226) is converted to radon (86Rn222) due to α-decay
88Ra226 → 86Rn222 + 2He4
What are the sources of dispersion in optical fibers? Sources of Dispersion into Optical fibers: The key sources of dispersion of pulses within optical fibers can be catego
It is the property of changing readily from a solid or liquid to a vapour. It is the speed that a chemical compounds evaporates. Higher volatility indicates faster evaporation.
The relative permeability of a paramagnetic substance is (A) Unity. (B) Slightly more than unity. (C) Zero. (D) less than unity. Ans: The relativ
A coil of 600 turns is wound uniformly on a ring of non-magnetic material. The ring has a uniform cross-sectional area of 200mm 2 and a mean circumference of 500mm. If the current
When is the combination of cells advantageous and why? (Mar 2009) What do you mean by internal resistance of a cell? Write down the value of internal resistance of an ideal cell
Q. What is the neutron? Answer:- A neutron is a subatomic particle it's one of the building blocks of the atom. It has a mass of in relation to 1.675 x 10-27 kg. Its spin
Two light rays will interfere constructively with maximum amplitude if the path difference between them is: a) one wavelength b) one-half wavelength c) one-qua
What is the upside down delta in the Schrodinger Equation?
Imagine a car tire that contains 5.1 moles of air when at a gauge pressure of 2.1×105N/m2 (the pressure above atmospheric pressure) and a temperature of 27 °C. The temperature incr
What is error
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