Eamcet Physics - 1 st Year : Unit 7.4 ( Properties of Bulk Matter ) - Surface Tension - Surface Energy Free Online Tests | Mock Tests | Preparation | Practice Tests

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Eamcet Physics
1 st Year : Unit 7.4 ( Properties of Bulk Matter ) - Surface Tension - Surface Energy

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A ring is cut from a platinum tube having 10 cm internal and 11 cm external diameter. It is supported horizontally from a pan of balance, so that it comes in contact with water in a glass vessel. What is the surface tension of water if an extra, 4.752gram weight is required to pull it away from water? (g = 10 m/s²) :

A. 7.2 x 10^-2 N/m

B. 72 N/m

C. 14.4 x 10^-2 N/m

D. 144 N/m

E. None of the above

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Correct choice: A

Explanation:

None

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Eamcet Physics 1 st Year : Unit 7.4 ( Properties of Bulk Matter ) - Surface Tension - Surface Energy

Eamcet Physics
1 st Year : Unit 7.4 ( Properties of Bulk Matter ) - Surface Tension - Surface Energy