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Physics-

General

Easy

Question

Two hollow hemispheres of metal are fitted together to form a sphere of radius R. Air from the shall is pumped out and pressure remained left inside is $fraction numerator 1 over denominator 4 end fraction$ th the outside atmospheric pressure P₀. The force required to separate the hemisphers is

$\frac{3}{4} π R^{2} P_{0}$
$\frac{3}{2} π R^{2} P_{0}$
$π R^{2} P_{0}$
$\frac{1}{2} π R^{2} P_{0}$

The correct answer is: $fraction numerator 3 over denominator 4 end fraction pi R to the power of 2 end exponent P subscript 0 end subscript$

Excess pressure exists outside

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