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         2.)Force necessary to pull a circular plate of 5cm radius from water surface for which surface tension is 75 dynes/cm, is3.)A square frame of side L is dipped in a liquid. On taking it out, a membrane is formed. If the surface tension of the liquid is T, the force acting on the frame will be4.)The material of a wire has a density of 1.4 g per cm3. If it is not wetted by a liquid of surface tension 44 dyne per cm, then themaximum radius of the wire which can float on the surface of the liquid is
one year ago

Arun
18718 Points
							Dear student

F = T * I = 75 * 2 $\pi$ * r = 150 * 5 $\pi$
= 750 $\pi$ dynes
Hope it helps

Regards


one year ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions