Question

The value of g at a place decreases by 2%. The barometric height of mercury

• A. Increases by 2%
• B. Decreases by 2%
• C. Remains unchanged
• D. Sometimes increases and sometimes decreases

Answer 1

Answer: (A)

Increases by 2%

Answer 2

$h = \frac { P } { \rho g }$ ∴$h \propto \frac { 1 } { g }$ (P and ρ are constant)

If value of g decreased by 2% then h will increase by 2%