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A 10 cm long wire is placed horizontal o...

A 10 cm long wire is placed horizontal on the surface of water and is gently pulled up with a force of `2xx10^(2)` N to keep the wire in equilibrium. The surface tension, in `Nm^(-1)` of water is

A

`0.002`

B

`0.001`

C

`0.2`

D

`0.1`

Text Solution

Verified by Experts

The correct Answer is:
D
We have, 2Sl = F
`rArr S = F/2l = (2 xx 10^(-2))//2 xx 0.10 = 0.1 Nm^(-1)`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SURFACE TENSION -Exercise 2 (Miscellaneous Problems)
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  4. A drop of water breaks into two droplets of equal size. In this proces...

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  5. A mercury drop of radius 1.0 cm is sprayed into 10^(6) droplets of equ...

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  6. A mercury drop of radius 1 cm is broken into 10^6 droplets of equal si...

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  7. Under a pressure head, the rate of orderly volume of liquid flowing th...

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  8. Water flows through a frictionless tube with a varying cross-section a...

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  9. The ratio of radii of two bubbles is 2 : 1. What is the ratio of exces...

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  10. 16cm^(3) of water flows per second through a capillary tube of radius ...

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  11. At critical temperature, the surface tension of a liquid

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  12. The rate of flow of liquid through a capillary tube of radius r is V, ...

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  13. A frame made of metallic wire enclosing a surface area A is covered wi...

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  14. Two spherical soap bubbles of radii a and b in vacuum coalesce under i...

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  15. The air pressure inside a soap bubbles of radius R exceeds the out sid...

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  16. On mixing the salt in water, the surface tension of water will

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  17. Two capillary tubes of radii 0.2 cm and 0.4 cm are dipped in the same ...

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  18. By inserting a capillary tube upto a depth l in water, the water rises...

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  19. A wire of length L metres, made of a material of specific gravity 8 is...

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  20. A soap bubble in air (two surfaces) has surface tension 0.03 Nm^(-1). ...

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