Questions
A Brass stopper snuggly fits in the hole of steel plate. To remove the stopper easily, the system
a
should be heated
b
should be cooled
c
may be heated or cooled
d
can not be removed by heating or cooling
detailed solution
Correct option is B
Co-efficient of linear expansion of brass is more than that of steel.So if the system is cooled down , decrease in diameter of brass stopper will be more than that of the hole in steel.Talk to our academic expert!
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A rotating solid metal sphere is heated by . If then percentage change in its moment of inertia is
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