Q. A vessel with water is placed on a weighing pan and it reads $0.8\ gcc^{- 1}$ is sunk into the water with a pin of negligible volume as shown in figure keeping it sunk. The weighing pan will show a reading

A) 600 g
B) 632 g
C) 642 g
D) 640 g
Explanation

(d) The upward thrust ($ie$ buoyancy force) acts on the body and an equal and opposite force acts on the water so the weight will be the sum of the two $= 600 + 40 = 640\ g$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.