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A body cools in 7 minute from 60^(0)C to...

A body cools in 7 minute from `60^(0)C` to `40^(0)C`. Temperature after the next 7 minutes is 7x. Find .x.. (The temperature (in degree) of surrounding is `10^(0)C`).

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A body cools from 60^(@)C to 40^(@)C in 7 minutes. What will be its temperature after next 7 minutes if the temperature of its surroundings is 10^(@)C ?

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Knowledge Check

  • Certain quantity of water cools from 70^(@)C to 60^(@)C in the first 5 minutes and to 54^(@)C in the next 5 minutes. The temperature of the surroundings is

    A
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    B
    `42^(@)C`
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    C
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    D
    `45^(@)C`

  • A body cools from 71^(@) C. to 50^(@) C in 5 minutes. Temperature of surroundings is 20^(@) C. Its temperature after next 10 minutes is

    A
    `25^(0)`C
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    C
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