INSIGHT UPSC QUIZ

Science & Technology General Science
Q.

 In context of General Science, consider the following statements:

1. All fluids exert pressure on the base and walls of the container in which they are enclosed.

2. All objects experience a downward force of buoyancy when they are immersed in a fluid.

3. The magnitude of buoyancy force is independent of the density of the fluid in which the object is immersed.

Which of the statement(s) given above is/are correct?

Explanation:

ANSWER: (A) 

  • Statement 1 is correct.

All liquids and gases are fluids. A solid exerts pressure on a surface due to its weight. Similarly, fluids have weight, and they also exert pressure on the base and walls of the container in which they are enclosed. Pressure exerted in any confined mass of fluid is transmitted undiminished in all directions. 

  • Statement 2 is not correct.

The upward force exerted by the fluid on the object (when immersed in the fluid) is known as upthrust or buoyant force. In fact, all objects experience an upward force of buoyancy when they are immersed in a fluid. 

  • Statement 3 is not correct.

The magnitude of this buoyant force depends on the density of the fluid. 

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