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HomePhysics35. If work done in increasing the size of a soap film from to is then the surface tension is

35. If work done in increasing the size of a soap film from to is then the surface tension is

(a) 2 x 10-2Nm-1                          (b) 2 x 10-4Nm-1

(c)  2 x 10-6Nm-1                          (d) 2 x 10-8Nm-1

Ans.  a

(7)

5/5 - (1 vote)

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

(a)      – 5 J (b)  – 10 J (c)   – 15 J (d)  – 20 J Answer-a (126)

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