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Three solid objects of the same material and of equal mass –
a sphere, a cylinder (length = diameter) and a cube – are at
5000C initially. These are dropped in a quenching bath
containing a large volume of cooling oil each attaining the
bath temperature eventually. The time required for 90%
change of temperature is smallest for
a) cube
b) cylinder
c) sphere
d) equal for all the three
whyyyyyyy???????
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Answer Posted / debshree
ANSWER 1 IS CORRECT
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