Physics
In case of uniform circular motion, the acceleration is

Variable in magnitude but tangential to the circle
Zero
Variable in magnitude but constant in direction
Constant in magnitude and directed radially inwards

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Physics
In the process of magnetisation of a bar

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

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