A) 4.5cm,
B) 2.3cm
C) 7 cm
D) 5 cm
Correct Answer: D
Solution :
The radius of new bubble is given by \[r=\sqrt{r_{1}^{2}+r_{2}^{2}}=\sqrt{{{3}^{2}}+{{4}^{2}}}\] \[=\sqrt{9+16}=5\,cm\]You need to login to perform this action.
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