Physics
A galvanometer can be converted into a voltmeter by connecting with it a

High resistance in parallel
Low resistance in series
High resistance on series
Low resistance on parallel

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Physics
An egg sinks in soft water but floats in a concentrated solution of salt because

Egg absorbs salt from the solution and expands
Albumin dissolves in salt solution and egg becomes lighter
The density of salt solution exceeds the density of eggs
Water has high surface tension

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