SATHEE: Properties Of Solids And Liquids Question 246

Properties Of Solids And Liquids Question 246

Question: The maximum force, in addition to the weight required to pull a wire of 5.0 cm long from the surface of water at temperature $20^{\circ} C$ is 728 dynes. The surface tension of water is

Options:

A) $7.28 N / c m$

B) $7.28 d y n e / c m$

C) $72.8 d y n e / c m$

D) $7.28 \times 10^{2} d y n e / c m$

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Answer:

Correct Answer: C

Solution:

[c] $T = \frac{F}{2 l} = \frac{728}{2 \times 5}$

$∴ T = 72.8 d y n e / c m$

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Properties Of Solids And Liquids Question 246

Question: The maximum force, in addition to the weight required to pull a wire of 5.0 cm long from the surface of water at temperature 20∘C is 728 dynes. The surface tension of water is

Options:

Answer:

Solution:

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Question: The maximum force, in addition to the weight required to pull a wire of 5.0 cm long from the surface of water at temperature $20^{\circ} C$ is 728 dynes. The surface tension of water is