Home
Class 11
PHYSICS
Certain quantity of water,cools from 70^...

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 surrounding is

A

`45^@C`

B

`20^@C`

C

`42^@C`

D

`10^@C`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • BEHAVIOUR OF PERFECT GAS AND KINETIC THEORY

    SARAS PUBLICATION|Exercise EXAMPLE|24 Videos

  • GRAVITATION

    SARAS PUBLICATION|Exercise EXAMPLE|34 Videos

Similar Questions

Explore conceptually related problems

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.

A liquid cools from 70^(@)C to 60^(@)C in 5 minutes. Calculate the time taken by the liquid to cool from 60^(@)C to 50^(@)C , If the temperature of the surrounding is constant at 30^(@)C .

A metal ball of mass 1kg is heated by means of a 20W heater in a room at 20^(@)C . The temperature of the ball becomes steady at 50^(@)C . (a) Find the rate of loss of heat to the surrounding when the ball is at 50^(@)C . (b) Assuming Newton's law of cooling, calculate the rate of loss of heat to the surrounding when the ball is at 30^(@)C . (c) Assume that the temperature of the ball rises uniformly from 20^(@)C to 30^(@)C in 5 minutes. Find the total loss of heat to the surrounding during this period. (d) Calculate the specific heat capacity of the metal.

A pot of boiling water at 100^(@)C is removed from a stove at time t = 0 and left to cool in the kitchen. After 5 minutes, the water temperature has decreased to 80^(@)C , and another 5 minutes later it has dropped to 65^(@)C . Determine the temperature of the kitchen.

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?

A body cools from 60^@ C to 50^@ C in 10 min of room If the room temperature is 25^@ C and assuming Newton's cooling law holds good, the temperature of the body after 10 more minute.

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 ?

The 2.0 Omega resistor show in figure is dipped into a calorimeter containing water. The heat capacity of the calorimeter together with water is 2000 J K^(-1) . (a) If the circuit is active for 15 minutes, what would be the rise in the temperature of the water? (b) Suppose the 6.0 Omega resistor gets burnt. What would be the rise in the temperature of the water in the next 15 minutes? (Figure)

The two rods show in figure have identical geometrical dimension.. They are in contact with two heat baths at temperature 100^(@)C . And 0^(@)C . The temperature of the junction is 70^(@)C . Find the temperature of the junction if the rods are interchanged.

SARAS PUBLICATION-BULK MATTER -EXAMPLE
  1. A black hole is an object whose gravitational field is so strong that ...

    Text Solution

    |

  2. Steam at 100^@ C is passed.into 20 g of water at10^@C Whenwater acquir...

    Text Solution

    |

  3. Certain quantity of water,cools from 70^@C to 60^@C in the first 5 min...

    Text Solution

    |

  4. One mole of an ideal diatomice gas undergoes a transition from AtoB al...

    Text Solution

    |

  5. The ratio of the specific heats (Cp)/(Cv)=gamma in terms of degrees o...

    Text Solution

    |

  6. Figures below shows two paths that may be taken by a gas to go from a ...

    Text Solution

    |

  7. The two ends of metal rod are maintained at temperatures 100^@C and 11...

    Text Solution

    |

  8. The young's modulus of steel is twice that of brass . Two wires of sam...

    Text Solution

    |

  9. Light of wavelength 500 nm is incident on a metal with work function 2...

    Text Solution

    |

  10. If dimensions of critical velocity of a liquid vc flowing through a tu...

    Text Solution

    |

  11. A bullet of mass 10g moving horizontally with a velocity of 400 ms^-1s...

    Text Solution

    |

  12. A rectangular film of liquid is extended from (4cmxx2cm)to(5cmxx4cm).I...

    Text Solution

    |

  13. Three liquids of densities rho1rho2and rho3(with rho1>rho2>rho3), hav...

    Text Solution

    |

  14. Two identical bodies are made of a material for which the heat capacit...

    Text Solution

    |

  15. Coefficient of linear expansion of brass and steel rods are s...

    Text Solution

    |

  16. A piece of ice falls from a height h so that it melts completely .Only...

    Text Solution

    |

  17. A black body is at temperature of 5760 K.The energy of radiation emit...

    Text Solution

    |

  18. Two rods Aand B of different material are welded together as shown in ...

    Text Solution

    |

  19. Young's double slit experiment is first performed in air and then in a...

    Text Solution

    |

  20. A spherical black body with a radius of 12 cm radiates 450 watt power ...

    Text Solution

    |