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January 11, 2020

What is Electroscope?

It is a device to detect and to identify electric charge. Examples of electroscope: Pith Ball and Gold leaf electroscope.

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MECHANICAL ADVANTAGE , VELOCITY RATIO

July 09, 2023

Which is always constant for a machine of given design: MA or VR ? Ans: VR remains constant for a machine of given design as it depends on the distances moved by the load and effort but MA can vary due to the friction developed between the moving parts of the machine.

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What is Regelation?

November 21, 2019

The melting point of ice is 0°C at normal pressure but when you increase the pressure on ice it melts at the temperature below 0°C( i.e. melting point of ice decreases with pressure). When the pressure applied is released then water formed from ice starts freezing. This phenomenon is called REGELATION.