Define Mole or SI unit of substance
Mole: mol: The basic SI unit of substance, stated as the quantity of substance which contains as many elementary units (that is, atoms, molecules, ions, and so forth) as there are atoms in 0.012 kg of carbon-12.
Write down a brief note on the classification of Alloys?
Relativity principle: The principle, utilized by Einstein's relativity theories, that the laws of physics are similar, at least qualitatively, in all frames. That is, there is no frame which is better (or qualitatively any different) from any other. T
What do you mean by the term positron? Explain in short.
State the law of Lamberts Cosine? Describe briefly?
In the radioactive dating we use half life to find out the age of a sample however not average life why? Describe.
Explain in short why electron and proton encompass similar charge while the proton is 1836 times heavier?
What do you mean by the term information in physics?
Trojan points: L4 and L5 are the two dynamically stable Lagrange points (that is, beneath certain conditions).
No-hair conjecture (1960s): The conjecture (confirmed in the 1970s and 1980s) in general relativity that a black hole has merely three salient external characteristics: angular momentum, mass, and electric charge. All the other proper
Trojan satellites: Satellites that orbit a body at one or the other Trojan points associative to a secondary body. There are numerous illustrations of this in our own solar system: a collection of asteroids that orbit in the Trojan points of Jupiter;
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