KVPY SA Exam 2014 Question Paper

Question : 17 of 80

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A box, when hung from a spring balance shows a reading of 50 kg. If the same box is hung from the same spring balance inside an evacuated chamber, the reading on the scale will be

50 kg because the mass of the box remains unchanged.
50 kg because the effect of the absence of the atmosphere will be identical on the box and the spring balance.
less than 50 kg because the weight of the column of air on the box will be absent.
more than 50 kg because the atmospheric buoyancy force will be Absent.

Validate

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