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Two soap bubbles A and B are kept in a c...

Two soap bubbles A and B are kept in a closed chamber where the air is maintained at pressure `8N//m^2`.The radii of bubbles A and B are 2cm and 4cm, respectively. Surface tension of the soap-water used to make bubbles is `0.04N//m`. Find tha ratio `n_B//n_A`, where `n_A` and `n_B` are the number of moles of air in bubbles A and B, respectively. [Neglect the effect of gravity.]

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  • If A and B are two matrices of the order 3xxmand3xxn , respectively , and m=n , then the order of matrix (5A-2B) is ……….

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    B
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