Physics
Who indirectly determined the mass of the electron by measuring the charge of the electron?

Rutherford
Einstein
Millikan
Thomson

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Physics
In the process of magnetisation of a bar

The entire bulk of the bar gets magnetised
Only the surface of the bar gets magnetised
Only some parts of the outer layers of the bar get magnetised
Only the ends of the bar get magnetised

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Physics
A balloon filled with hydrogen will

Reach a particular height and start coming down
Burst after reaching some height
Continue going upwards uninterrupted
Reach a particular height and remain floating

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