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A metal ball cools from 64^(@)C to 50^(@...

A metal ball cools from `64^(@)C` to `50^(@)C` in 10 minutes and to `42^(@)C` in the next 10 minutes. The ratio of the rates of fall of temperature during the two intervals is

A

`4/7`

B

`7/4`

C

2

D

`5/2`

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The correct Answer is:
B
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TARGET PUBLICATION-KINETIC THEORY OF GASES AND RADIATION -critical thinking
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