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Charles's Law

A barometer c...

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A barometer contains two uniform capillaries of radii 1.44×10^{-3}m and 7.2×10^{-4} m. The height of liquid in narrow tube is 0.2m more than that in wide tube. If true pressure difference is x N/m, then find the value of x. Density of liquid =10^3kg/m^3, surface tension =72×10^{-3}N/m and g=9.8m/s^2.\lbrack Numerical value type Qus

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Q. A barometer contains two uniform capillaries of radii

1.44 \times 10^{- 3} m

. If the height of liquid in narrow tube is

0.2 m

more than that in wide tube, calculate the true pressure difference. Density of liquid

= 10^{3} k g / m^{3}

, surface tension

= 72 \times 10^{- 3} N / m

g = 9.8 m s^{- 12}

.

Q. Barometers are made of two capillary tubes of radii

1.44 \times 10^{- 3} m

7.2 \times 10^{- 4}

respectively. If the height of a liquid in narrow tube is

0.2 m

more than the height of it in broad tube, then what will be the exact pressure difference? (Density of liquid

= 10^{3} k g m^{- 3}

, surface tension

= 72 \times 10^{- 3} N / m

g = 8 m s^{- 2}

Two barometers are made of capillary tubes of radii

1.44 \times 10^{- 3} m

7.2 \times 10^{- 4}

respectively. If the height of a liquid in the narrow tube is

0.2 m

more than the height of it in the broader tube, then what will be the exact pressure difference?

(Density of the liquid

= 10^{4} k g m^{- 3}

, surface tension

= 72 \times 10^{- 3} N / m, g = 8 m s^{- 2})

Q. When a capillary tube is dipped in a liquid, liquid rises

0.06 m

in it. Surface tension of liquid is

0.03 N/m

, density of liquid is

10^{3} {kg/m}^{3}

. If contact angle is

60^{\circ}

, then radius of capillary is (Assume

g = 10 {m/s}^{2}

)

Q. Calculate the height to which liquid will rise in a capillary tube of radius

10^{- 2} m

. Surface tension of liquid is

0.1 N / m

. Angle of contact is

60^{\circ}

& density of liquid is

2000 {kg/m}^{3}

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