The excess pressure applied at a point inside a liquid at rest is distributed equally in all directions. This principle is known as
Answer : D. Pascal's law
Pyrometer works on
Answer : C. Stefanâ€™s law
Which law states that the extension of a spring is proportional to the tension stretching it. Doubling of the tension results in the doubling of the amount of stretch?
Answer : B. Hookeâ€™s Law
Keplerâ€™s first law of planetary motion is also called
Answer : C. law of orbits
Which law states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules?
Answer : A. Avagadroâ€™s Law
The force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled?
Answer : D. Coulombâ€™s Law