1.

Find out work done to expend soup bobble to radius R = 5 cm (surface tension of water = 0.1 N/m) (1) 2.8 × 10–3 J (2) 6.28 × 10–3 J (3) 3.7 × 10–3 J (4) 5.8 × 10–3 J

Answer»

Correct option: (2) 6.28 × 10–3 J

Explanation: 

Work = 2(4πR2)(T)



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