Home
Class 12
MATHS
Water at temperature 100^(@)C cools in 1...

Water at temperature `100^(@)C` cools in 10 minutes to `80^(@)C` in a room temperature of `25^(@)C`.
Find
(i) The temperature of water after 20 minutes
(ii) The time when the temperature is `40^(@)C`
`["log"_(e)11/15=-0.3101,log_(e)5=1.6094]`

Promotional Banner

Topper's Solved these Questions

  • MODAL QUESTION PAPER

    SURA PUBLICATION|Exercise PART - I|39 Videos

  • MODAL QUESTION PAPER

    SURA PUBLICATION|Exercise PART - II|20 Videos

  • MODAL QUESTION PAPER

    SURA PUBLICATION|Exercise SECTION - III|10 Videos

  • INVERSE TRIGONOMETRIC FUNCTIONS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS ( 5 MARKS)|6 Videos

  • ORDINARY DIFFERENTIAL EQUATIONS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS|24 Videos

Similar Questions

Explore conceptually related problems

Water at temperature 100^(@)C cools in 10 minutes to 80^(@)C in a room temperature of 25^(@)C . Find (i) The temperature of water after 20 minutes [log_(e).(11)/(15)=-0.3101, log_(e)5=1.609]

A cup of coffee at temperature 100^(@)C is placed in a room whose temperature is 20^(@)C and it costs to 60^(@)C in 10 minutes find the temperature after a further interval of 10 minutes .

A cup of coffee at temperature 100^@C is placed in a room whose temperature is 15^@C and it cools to 60^@C in 5 minutes. Find its temperature after a further interval of 5 minutes

A body cools down from 50^(@)C to 45^(@)C in 5 minutes and to 40^(@)C in another 8 minutes. Find the temperature of the surrounding.

Estimate the average energy of a helium atom at (i) room temperature (27^(@)C) (ii) the temperature on the surface of the sun (6000K) and (iii) the temperature of 10^(7) K. (k_(B)1.38xx10^(-23)JK^(-1))

0.1 m^(3) of water at 80^(@)C is mixed with 0.3 m^(3) of water at 60^(@)C . What is the final temperature of the mixture ?

When the temperature of a gas increases from 0^(@)C the valume of the gas increases by a factor of 1.25 what is the final temperature ?

If 50g of water at 20^@ C temperature and 50 g of water 40^@ C temperature are mixed, what is the final temperature of the mixture?