मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

The cold object the hot object enclosed in one box of heat-resistant material. What changes will occur in the two objects when temperature flows from those objects?

Advertisements
Advertisements

प्रश्न

The cold object the hot object enclosed in one box of heat-resistant material.

  1. What changes will occur in the two objects when temperature flows from those objects?
  2. Which principle can show that the energy exchange takes place between two objects only when kept in isolated system?
टीपा लिहा
Advertisements

उत्तर


  1. 1. Temperature of cold object increases due to gain of heat energy.
    2. At the same time, temperature of hot object decreases due to loss of heat energy.
    3. The process of heat exchange continues till both the objects acquire the same temperature.
  2. Principle of heat exchange can show that the energy exchange takes place between two objects only when kept in isolated system.
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Heat - Answer the Following

संबंधित प्रश्‍न

A child running a temperature of 101°F is given an antipyrin (i.e. a medicine that lowers fever) which causes an increase in the rate of evaporation of sweat from his body. If the fever is brought down to 98 °F in 20 min, what is the average rate of extra evaporation caused, by the drug? Assume the evaporation mechanism to be the only way by which heat is lost. The mass of the child is 30 kg. The specific heat of human body is approximately the same as that of water, and latent heat of evaporation of water at that temperature is about 580 cal g–1.


You have a choice of three metals A, B, and C, of specific heat capacities 900 Jkg-1 °C-1, 380 Jkg-1 °C-1 and 460 Jkg-1 °C-1 respectively, to make a calorimeter. Which material will you select? Justify your answer.


Give a mathematical relation between Heat Capacity and Specific Heat Capacity.


Write the expression for the heat energy Q received by the substance when m kg of substance of specific heat capacity c Jkg-1 k-1 is heated through Δt° C.


Water property of water makes it an effective coolant?


In an experiment to determine the specific heat capacity of a solid following operations were
made:
Mass of calorimeter + stirrer = x kg
Mass of water = y kg
Initial temperature of water t1℃
Mass of solid = z kg
Temperature of solid = t2 ℃
Temperature of mixture = t ℃
Specific heat capacity of calorimeter and water are c1 and c2 respectively. Express the specific
heat capacity c of the solid in terms of the above data.


How does green house effect help in keeping the temperature of earth’s surface suitable for living of human beings?


State the effect of enhancement of green house effect.


What is the specific heat capacity of melting ice?


What are the factors on which the quantity of heat given to a body depends?


Write the approximate values of the specific latent heat of fusion of ice.


Write the approximate values of the specific latent heat of vaporization of steam.


Give two reasons as to why copper is preferred over other metals for making calorimeters.


If, in a central heating system, steam enters a radiation pipe at 100°C and water leaves the radiation pipe at 100°C, can this radiation pipe heat a room? Give an explanation for your answer.


Write the name.

The amount of heat absorbed at constant temperature by unit mass of a liquid to convert into gaseous phase.


If 'Cp' and 'Cv' are molar specific heats of an ideal gas at constant pressure and volume respectively. If 'λ' is the ratio of two specific heats and 'R' is universal gas constant then 'Cp' is equal to ______.


Two uniform brass rods A and B of length land 2l and radii 2r and r respectively are heated to the same temperature. The ratio of the increase in the volume ofB to that of A is ____________.


Which of the substances P, Q, or R has the lowest specific heat? The temperature v/s time graph is shown ______.


Heat is applied to a rigid diatomic gas at constant pressure. The ratio ΔQ : ΔU : ΔW is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×