Scientific Laws - Scientific Laws
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Q: WHAT ARE IMPORTANT LAWS AND PRINCIPLES OF SCIENCE?
| Option | Answer | Is Correct |
|---|---|---|
| 1 | Archimedes Principle When a body is immersed either wholly or partially in a fluid at rest, the apparent loss of weight suffered by it is equal to the weight of the fluid displaced by it. Avogadro’s Law Equal volumes of all gases under the same conditions of temperature and pressure contain equal number of molecules. Black Body Radiation A black body absorbs heat or radiates heat more quickly than any other body. Boiling Point It increases with the increase of pressure. The presence of impurities also raises the boiling point of a liquid. Center of Gravity A body will remain at rest only if the vertical line through the centers of gravity passes through the base of support of the body. Coulomb’s Law The force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled. Faraday’s Laws of Electrolysis The amount of chemical change during electrolysis is proportional to the charge passed. The masses of substances liberated or deposited by the same quantity of electric charge are proportional to their chemical equivalents. Law of Conservation of Matter In chemical changes, matter is neither created nor destroyed. The sum total of the masses of all the products of a chemical change is exactly equal to the sum total of the substances from which these products have been formed. Laws of Thermodynamics The amount of heat given to a system is equal to the sum of the increase in the internal energy of the system and the external work done. It is impossible to construct a continuous self acting machine that can pump heat energy from a body at lower temperature to a body at higher temperature. Lenz’s Law When an electric current is induced by a change in magnetic field, the induced current is always in such a direction that its magnetic field opposes the change of field which causes the induction. Mass - Energy Equation E = mc2, where E = quantity of energy released from the annihilation of mater of mas |
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