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What will be the length of mercury column in a barometer tube, when the atmospheric pressure is 76 cm of mercury and the tube is inclined at an angle of `30 ^(@)` with the horizontal direction ?

Text Solution

Verified by Experts

Here, h=76 cm `theta=30^(@)`
If l is the length of mercury column is the barometer tube then
`(h)/(l)=sin 30^(@) implies (76cm)/(l)=(1)/(2)`
`implies " " l=2xx76=152 cm`
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Knowledge Check

  • What will be the length of mercury column in a barometer tube when the atmospheric pressure is x cm of mercury and the tube is inclined at an angle phi with the vertical direction ?

    A
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    B
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    D
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    A
    `P_1=0, P_2=` atgmospheric pressure
    B
    `P_1`= atmosphereic pressure `P_2=0`
    C
    `P_1=P_2=`atmospheric pressure
    D
    `P_1=P_2=0`

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