Four identical beakers contain same amount of water as shown below.  Beaker 'a' contains
Channel: Doubtnut
Date: 30/08/2020

Four identical beakers contain same amount of water as shown below.  Beaker 'a' contains only water.  A lead ball is held submerged in the beaker 'b' by string from above.  A same sized plastic ball, say a table tennis (TT) ball, is held submerged in beaker 'c' by a string attached to a stand from outside. Beaker 'd' contains same sized TT ball which is held submerged from a string attached to the bottom of the beaker.  These beakers (without stand) are placed on weighing pans and register reading `W_(a), W_(b), W_(c)` and `W_(d)` for a, b, c and d, respectively. (Effects of the mass and volume of the stand and string are to be neglected) img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/KVPY_CP_XII_P2_2017_PHY_E01_027_Q01.png" width="80%"