A cork ball is floating on the surface of water in a beaker. The beaker is covered with a bell jar and the air is evacuated. What will happen to the ball?

sink a little

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

rise a little

No worries! We‘ve got your back. Try BYJU‘S free classes today!

remain unchanged

No worries! We‘ve got your back. Try BYJU‘S free classes today!

sink completely

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B sink a little
The upthrust due to air will be replaced by that due to water vapours. Water vapours are lighter than the air. So the upthrust decreases and the ball sinks a little.

Suggest Corrections

Similar questions

A block of wood is floating on the surface of the water in a beaker. The beaker is covered with a bell jar and the air is evacuated. What will happen to the block?

Q. A wooden block is floating on water kept in beaker. 40% of the block is above the water surface. Now the beaker is kept inside a lift that starts going upward with acceleration equal to

g / 2

. The block will then

Q. Two identical beakers are filled with water up to the brim. On placing a wooden block in beaker 2, the wooden block floats on the surface and excess water flows out. Which among beaker 1 and beaker 2 will weigh more?

Q. When a beaker of water is heated its volume increases a little. What actually happens to the particles in the liquid?

Q. A block of ice at

0^{o} C

is floating on the surface of ice water in a beaker. The surface of the water just comes of the top of the beaker. When the ice melts the water level will

Join BYJU'S Learning Program

A cork ball is floating on the surface of water in a beaker. The beaker is covered with a bell jar and the air is evacuated. What will happen to the ball?

The correct option is B sink a littleThe upthrust due to air will be replaced by that due to water vapours. Water vapours are lighter than the air. So the upthrust decreases and the ball sinks a little.

The correct option is B sink a little
The upthrust due to air will be replaced by that due to water vapours. Water vapours are lighter than the air. So the upthrust decreases and the ball sinks a little.