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Physics-

General

Easy

Question

Solid copper cube of edge 1 cm is suspended an evacuated enclosure. Its temperature is found to fall from 100°C to 99°C in 100 seconds. Another solid copper cube of edge 2 cm with similar surface nature is suspended in similar manner. Find the time required for this cube to cool from 100°C to 99°C.

100sec
150sec
200sec
300sec

The correct answer is: 100sec

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