The value of $g $ at a place decreases by $ 2\%.$ The barometric height of mercury
AIncreases by $2\%$
BDecreases by $ 2\%$
C
Remains unchanged
D
Sometimes increases and sometimes decreases
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AIncreases by $2\%$
a (a) $h = \frac{P}{{\rho g}}$
$h \propto \frac{1}{g}$ ($P $ and are constant)
If value of $g$ decreased by $2\% $ then h will increase by $2\%.$
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