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Two point changes q1 and q2 are placed at a distance r from one another then electrostatic potential energy of two phase charge system will be kq1q2/r . We take P.E. of two charge system to be zero when they are placed at infinity.
Magnetic materials: Ferromagnetic materials: Ferromagnetic materials can be easily magnetised and exhibit strong magnetic properties. This group can be further sub
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
Permeability of free space; magnetic constant; mu_0 The ratio of the magnetic flux density in a substance is to the external field strength for vacuum. This is equal to 4 pi x
According to Rutherford's experiment when a sample of radioactive substance is place in a lead box and permit the emission of radiation by a small hole only. When the radiation ent
Fun with a pendulum Suspend a hard ball about 8 cm in diameter on a cord over a table. The cord should be at least 1.5 m in length and should be just high sufficient off the ta
Simple Microscope: A simple microscope of magnifying glass is a convex lens which form virtual erect and magnifying image of an object which is placed with in it's focal length
Illustrate what is a positron? Answer:- A positron is a positively charged electron and it's an anti-electron - antimatter! The positron has a charge of +1 just the opposi
Q. Describe diffrent principle of rays? Principle Ray I : The easy one it hits the lens smack dab in the middle as well as passes straight on through. Principle Ray II : P
Write down a short note on the discovery of neutron. Show the uses of radioisotopes.
what happens when a melt contains 1% ag with 99%pb?
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