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A bird resting on the floor of an airti...

A bird resting on the floor of an airtight box which is being carried by a boy star flying. The boy will fell that the box is now :

A

heaviner

B

lighter

C

show no change in weight

D

lighter in beginning and heaveier later.

Text Solution

Verified by Experts

The correct Answer is:
B

The air pushed down by the wings of the parrot will go out of the wire cage.
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PRADEEP-PROPERTIES OF BULK MATTER-Multiple choice questions-I
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  2. A piece of solid weighs 120 g in air, 80 g in water and 60 g in a liqu...

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  3. A bird resting on the floor of an airtight box which is being carried...

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  4. An iceberg is floating partly immersed in sea water, the density of se...

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  5. An ornament weighing 50g in air weighs only 46 g is water. Assuming th...

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  7. In the above question, the time taken by the ball to come again to the...

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  8. An empty plastic box of mass m is found to accelerate up at the rate o...

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  10. A block of wood floats in water with (4//5)th of its volume submerged....

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  11. A wooden block, with a coin placed on its top, floats in water as show...

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  12. A thin uniform cylindrical shell, closed at both ends, is partially fi...

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  13. A uniform cylinder of length L and mass M having cross-sectional area ...

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  14. Two non-mixing liquids of densities rho and (n gt1) are put in a cont...

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  17. The work done in increasing the size of a soap film from 10cmxx6cm to ...

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  18. Work done in increasing the size of a soap bubble from a radius of 3cm...

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