It takes `10 minutes` to cool a liquid from `61^(@)C` to `59^(@)C`. If room temperature is `30^(@)C` then find the time taken in cooling from `51^(@)C` to `49^(@)C`.

A body takes, 4 minutes to cool from 100^(@)C to 70^(@)C , if the room temperature is 25^(@)C , then the time taken to cool from 70^(@)C to 40^(@)C will be

A body takes 4 min. to cool from 61^(@)C to 59^(@)C . If the temperature of the surroundings is 30^(@)C , the time taken by the body to cool from 51^(@)C to 49^(@)C is :

A body in laboratory takes 4 minutes to cool from 6 1 °C to 59 °C. If the laboratory temperature is 30° C, then the time taken by it to cool from 51 °C to 49 °C will be

A body in laboratory takes 4 minutes to cool from 6 1 °C to 59 °C. If the laboratory temperature is 30° C, then the time taken by it to cool from 51 °C to 49 °C will be

A body takes 5 minutes to cool from 90^(@)C to 60^(@)C . If the temperature of the surroundings is 20^(@)C , the time taken by it to cool from 60^(@)C to 30^(@)C will be.

A body takes 5 minute to cool from 65^(@) C to 60^(@) C and 7 minute to cool from 60^(@)C to 55 ^(@) C . find out the room temperature and the time it will take to cool 55 ^(@) C to 50^(@) C.

A body cools from 100^@C to 70^@C in 4 minute. If the room temperature is 15^@C the time taken to cool from 70^@C to 40^@C will be

A body takes 8 minutes to cool from 90^(@) C to 80^(@) C in a surrounding of temperature 25^(@) C. The time taken by it to cool from 80^(@)C " to" 70^(@) C in the same surroundings is

A body cools from 51^@C to 50.9^@C in 10 sec. If surrounding temperature is 31^@C . The time taken to cool from 41^@C to 40.9^@C will be

A body takes T minutes to cool from 62^@C to 61^@C when the surrounding temperature is 30^@C . The time taken by the body to cool from 46^@C to 45.5^@C is