Question

A solid piece of lead experiences certain upthrust. The lead piece is then shaped into a hollow cube and placed in the same liquid. The upthrust acting on it :

• A. increases
• B. decreases
• C. remains same
• D. none of the above

Answer 1

The correct option is A

increases

1. The upward force experienced by a body when partly or wholly immersed in a fluid, is called upthrust or buoyant force.
2. A solid piece of lead experiences certain upthrust. The lead piece is then shaped into a hollow cube and placed in the same liquid then the upthrust acting on it also increases.
3. With the increase in volume, the weight of liquid displaced increases and also the upthrust acting on it increases.

Hence, the correct answer is option (A) i.e. increases