Physics
In the process of magnetisation of a bar

Only the surface of the bar gets magnetised
The entire bulk 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
Which one of the following is the correct sequence of passage of light in a compound microscope?

Objective lens -Condenser -Body tube -Eye piece
Eyepiece -Objective lens -Body tube -Mirror
Condenser -Objective lens -Body tube -Eyepiece
Condenser -Objective lens -Eye -piece -Body tube

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