Basic Maths and Units and DimensionsHard

Question

In Searle′s apparatus, when experimental wire is loaded and unloaded, the air bubble in spirit level gets shifted.

Options

A.towards reference wire while loading & towards experimental wire while unloading

B.towards experimental wire while loading & towards reference wire while unloading

C.towards experimental wire, both the times, during loading & unloading

D.towards reference wire, both the times during loading & unloading

Solution

Bubble get shifted upwards as air is less dense than spirit.

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