There is a soap solution of which coefficient of surface tension is 0.03 N m- 1 . the work done in blowing to from a soap bubble of surface area 40 (c m)2,(i n J), is

Question

There is a soap solution of which coefficient of surface tension is 0.03 N m- 1 . the work done in blowing to from a soap bubble of surface area 40 (c m)2,(i n J), is (A) 1.2× 10- 4 (B) 2.4× 10- 4 (C) 12× 10- 4 (D) 24× 10- 4

Tardigrade Admin · Accepted Answer

In case of soap bubble W=T× 2× Δ A =0.03× 2× 40× 10- 4=2.4× 10- 4 J

Q. There is a soap solution of which coefficient of surface tension is $0.03 N m^{- 1}$ . the work done in blowing to from a soap bubble of surface area $40 (c m)^{2}, (in J), i s$

$1.2 \times 1 0^{- 4}$

$2.4 \times 1 0^{- 4}$

$12 \times 1 0^{- 4}$

$24 \times 1 0^{- 4}$

In case of soap bubble
$W = T \times 2 \times Δ A$
$= 0.03 \times 2 \times 40 \times 1 0^{- 4} = 2.4 \times 1 0^{- 4} J$

Q. There is a soap solution of which coefficient of surface tension is 0.03Nm−1 . the work done in blowing to from a soap bubble of surface area 40(cm)2,(inJ),is

1.2×10−4

2.4×10−4

12×10−4

24×10−4