2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-16

  • question_answer
    A block floats in a liquid contained in a beaker. The beaker is placed on the floor of an elevator. If the elevator descends with acceleration a (< g), the up thrust on the block due to the liquid

    A) is equal to the weight of the liquid displaced.

    B) is greater than the weight of the liquid displaced.

    C) is less than the weight of the liquid displaced.

    D) becomes equal to zero.

    Correct Answer: C

    Solution :

    Due to downward acceleration of the elevator, the beaker exerts a force on the floor of the elevator From Newton's third law, the floor exerts upward force on the beaker. Hence total upthrust on the block is greater than when the system was at rest Hence the correct choice is (c).


You need to login to perform this action.
You will be redirected in 3 sec spinner