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 film of water is formed between two straight parallel wires each 10 cm long and at separation 5 mm. To increase the distance between them to 6 mm, the work done is 144 x 10^-7J. The surface tension of water is

A. 7 x 10^-3 Nm^-1

B. 7.2 x10^-3Nm^-1

C. 0.72Nm^-1

D. 0.072 Nm^-1

E. None of the above

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Correct choice: D

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