हिंदी

a. Which requires more heat: 1 g ice at 0℃ or 1 g water at 0℃ to raise its temperature to 10℃? b. Explain your answer in part (a). - Physics

Advertisements
Advertisements

प्रश्न

  1. Which requires more heat: 1 g ice at 0℃ or 1 g water at 0℃ to raise its temperature to 10℃?
  2. Explain your answer in part (a).
संक्षेप में उत्तर

उत्तर

  1. 1 g ice at 0°C requires more heat because ice would require additional heat energy equal to the latent heat of melting.
  2. 1 g ice at 0°C first absorbs 336 J heat to convert into 1 g water at 0°C.
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 11: Calorimetry - Exercise 11 (B) 1 [पृष्ठ २८१]

APPEARS IN

सेलिना Physics [English] Class 10 ICSE
अध्याय 11 Calorimetry
Exercise 11 (B) 1 | Q 23 | पृष्ठ २८१

संबंधित प्रश्न

State two characteristics of a good thermion emitter.


During transformation of liquid phase to solid phase, the latent heat is ______.


What is meant by latent heat? How will the state of matter transform if latent heat is given off?


Answer the following:

Explain the role of latent heat in the change of state of a substance.


A substance changes from its solid state to the liquid state when heat is supplied to it. What name is given to heat absorbed by the substance.


Name two factors on which the heat absorbed or given out by a body depends.


Explain the meaning of the term latent heat. State its S. I. unit.


Define the term ‘specific latent heat of fusion’ of a substance.


Why do we feel much comfortable when we sit under a moving fan especially when our body is sweating?


Why does evaporation causes cooling and why is water used in hot water bottles?


Explain the meaning of greenhouse effect.


1 kg of water is contained in a 1.25 kW kettle. Assuming specific heat capacity of water = 4.2 J/g °C and specific latent heat of vaporization = 2260 J/g, calculate:
(i) the time taken for the temperature of water to rise from 25°C to its boiling point,
(ii) the mass of water which evaporates per minute from the boiling water.


Find the odd one out and give its explanation.


Match the columns.

Column A Column B
1) Specific latent heat of fusion a) Air saturated with vapour
2) Specific latent heat of vaporisation b) Solid converts into liquid
3) Dew point temperature c) liquid converts into gas

Write the name.

Products obtained when sugar is heated.


600 g of copper at 50°C is mixed with lOOOg water at 20°C. Find the final temperature of the mixture. The specific heat capacity of copper is 0.4 Jg-1°C-1 and that of water is 4.2 Jg-1°C-1


Observe the following graph and answer the following questions:

  1. What does the graph represent? 
  2. What does the line AB represent?
  3. What does the line BC represent?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×