Heat and Thermodynamics 1 Question 15

15. A block of ice at 10C is slowly heated and converted to steam at 100C. Which of the following curves represents the phenomena qualitatively?

(2000,2M) (a)

(c)

(b)

(d)

Show Answer

Solution:

  1. The temperature of ice will first increase from 10C to 0C. Heat supplied in this process will be

Q1=msi(10) where, m= mass of ice si= specific heat of ice 

Then, ice starts melting. Temperature during melting will remain constant (0C).

Heat supplied in this process will be

Q2=mL,L= latent heat of melting.

Now, the temperature of water will increase from 0C to 100C. Heat supplied will be

Q3=msw(100)

where, sw= Specific heat of water.

Finally, water at 100C will be converted into steam at 100C and during this process temperature again remains constant. Temperature versus heat supplied graph will be as shown in above figure.



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक