Work done in increasing the separation of two parallel wires holding a liquid film
The same question, asked 2 times: 4 May 2023 S2*, 9 May 2024 S2. Every wording below, oldest first.
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Question 1
4 May 2023 S2
17A water film is formed between two parallel wires of 10 cm length. The distance of 0.5 cm between the wires is increased by 1 mm. The work done in the process is (surface tension of water N/m)Tap an option to check your answer.
Question 2
9 May 2024 S2
34A film of soap solution is formed between two straight parallel wires of length 10 cm each separated by 0.5 cm. If their separation is increased by 1 mm while still maintaining their parallelism. How much work will have to be done? (surface tension of solution N/m)Tap an option to check your answer.