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1. 5 मी. ऊँची एक टंकी आधी पानी से भरी है तथा शेष आधी तेल (घनत्व \( 0.85 gm / cm ^{3} \) ) से भरी है। इन द्रवों के कारण टंकी की तली पर दाब होगा- (a) \( 1.85 dyne / cm ^{2} \) (b) 89.25 dyne \( / cm ^{2} \) (c) 462.5 dyne \( / cm ^{2} \) (d) 500 dyne \( / cm ^{2} \)

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तली पर दाब \(P = (h_1d_ 1+ h_2 d_2) \frac g{cm^2}\)

\( = [250 \times 1 + 250 \times 0.85]\)

\(= 250 [1.85] \frac g{cm^2}\)

\(= 462.5 \frac g{cm^2}\)

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