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Standard XII

Physics

Pascal's Law

The atmospher...

Question

The atmospheric pressure and height of barometer column is $10^{5} P_{a}$ and 760mm respectively on the earth surface. If the barometer is taken to moon then column height will be

zero

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76 mm

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126.6 mm

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760 mm

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Solution

The correct option is A zero
Since there is no atmosphere on moon, no atmospheric pressure will be there and hence corresponding to 0 pressure, height of mercury column will be 0.

Answer is option A.

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Similar questions

Q. If a barometer is kept on the earth's surface then calculate the height of the barometer column

h

.
Atmospheric Pressure (

P_{a}

) is

10^{5}

.
The density of mercury (

ρ_{m}

) is

13600 k g m^{- 3}

.
Gravitational acceleration (

g

) near earth's surface is

10 m s^{- 2}

Q. The height of mercury in a barometer is

760 m m

, then the atmosphere pressure is

[g = 9.8 {m / s}^{2}]

A barometer correctly reads the atmospheric pressure as 76 cm of mercury. Water droplets are slowly introduced into the barometer tube by a dropper. The height of the mercury column first decreases and then becomes constant. If the saturation vapour pressure at the atmospheric temperature is 0.80 cm of mercury, find the height of the mercury column when it reaches its minimum value.

Q. The height of mercury barometer is

h

when the atmospheric pressure is

10^{5} P a

,The pressure at

x

in the shown diagram is

Q. Explain how is the height of mercury column in tube of a simple barometer is a measure of the atmospheric pressure.

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The atmospheric pressure and height of barometer column is 105Pa and 760mm respectively on the earth surface. If the barometer is taken to moon then column height will be

The correct option is A zeroSince there is no atmosphere on moon, no atmospheric pressure will be there and hence corresponding to 0 pressure, height of mercury column will be 0.Answer is option A.

The atmospheric pressure and height of barometer column is $10^{5} P_{a}$ and 760mm respectively on the earth surface. If the barometer is taken to moon then column height will be

The correct option is A zero
Since there is no atmosphere on moon, no atmospheric pressure will be there and hence corresponding to 0 pressure, height of mercury column will be 0.

Answer is option A.