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[" 38.A body takes "4" min to cool from ...

[" 38.A body takes "4" min to cool from "100^(@)C" to "70^(@)C" .To cool from "70^(@)C" to "40^(@)C" it will "],[" take (room temperature is "15^(@)C" ) "],[[" 1) "7min," 2) "6min," 3) "5min," 4) "4min]]

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A body takes 4 minutes to cool from 100^(@)C to 70^(@)C . To cool from 70^(@)C to 40^(@)C it will take (room temperture os 15^(@)C )

A body takes 4 minutes to cool from 100^(@)C to 70^(@)C . To cool from 70^(@)C to 40^(@)C it will take (room temperture os 15^(@)C )

A body cools from 70^(@)C to 60^(@)C in 8minute The same body cools from 60^(@)C to 50^(@)C in .

A body takes 5 minutes to cool from 100^(0)C to 60^(0)C and takes time t to cool from 80 to 40^(0)C .If surrounding temperature is 20^(0)C .Find t(min)

A hot liquid takes 10 minute to cool from 70^(@)C to 60^(@)C . The time taken by the liquid to cool from 60^(@)C to 50^(@)C is

If a liquid takes 30 seconds in cooling of 80^(@)C to 70^(@)C and 70 seconds in cooling 60^(@)C to 50^(@)C , then find the room temperature.

If a liquid takes 30 seconds in cooling of 80^(@)C to 70^(@)C and 70 seconds in cooling 60^(@)C to 50^(@)C , then find the room temperature.

If a liquid takes 30 seconds in cooling of 80^(@)C to 70^(@)C and 70 seconds in cooling 60^(@)C to 50^(@)C , then find the room temperature.