Question

A silver ingot weighing $2.1$kg is held by a string so as to be completely immersed in a liquid of relative density $0.8$. The relative density of silver is $10.5$. The tension in the string and the buoyant force is _____.

• A. Buoyant force is 1.5 N
• B. Tension is 19.4 N
• C. Buoyant force is 3.1 N
• D. Tension is 12.5 N

Answer 1

Answer: (B)

Tension is 19.4 N

$\text{vol. of silver}=\frac{2.1}{10.5}=\frac{1}{5}$

$\text{Tension}=mg-\text{Bovency.}$

$=21-\frac{0.8\times 10}{5}$

$=19.4N$

$\text{Answer:-}\left(B\right)$