Expansion or contraction
Expansion or contraction
Expansion or contraction: Solids expand or contract very little on being heated or cooled. The action of heat generally increases the energy of the particles. As these particles become more energized, they vibrate about their mean position of rest more frequently. But, they do not become so energetic as to escape from their mean position. So, the extent of expansion in a solid is small. On cooling, the particles of a solid lose energy and vibrate weakly. But, as the particles so not leave their fixed positions, they do not come closer. This explains why solids contract very little on cooling.
As the particles in a solid become more energized, they ___________________ about their mean position of rest more frequently. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct : (a) Solids expand or contract very little on being heated or cooled. (b) The action of heat generally increases the energy of the particles. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct : (a) The action of heat generally decreases the energy of the particles. (b) The action of heat generally increases the energy of the particles.
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| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
