Reflection and Absorption of Heat
Reflection and Absorption of Heat
Reflection And Absorption Of Heat:
When heat falls over an object some of the heat is absorbed by the body and some of the heat is reflected. The temperature of an object increases because of absorption of heat.
Certain day to day phenomenon can be explained by the principle of reflection and absorption of heat:
1. In conventional room heater you can see the reflector attached with it. The reflector of the room heater reflects the heat towards the person sitting or standing near the room heater.
2. Reflection is the cause that umbrella is used to protect from heat of the sun in summer.
3. Dark colour absorbs more heat while light colour reflects most of the heat. That’s why wearing light coloured clothes is preferred in summer, dark coloured clothes are preferred in winter. Dark clothes absorb more heat and keep one comfortable in winter. On the other hand, light clothes reflect most of the heat and keep one comfortable in summer.
Woolen clothes are used in ___________________ . | |||
| Right Option : C | |||
| View Explanation | |||
Why do we wear woolen clothes in winter __________________ .
| |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct ? (a) As heat falls over an object some of the heat is absorbed by the body and some of the heat is reflected. (b) Reflection is the cause that umbrella is used to protect from heat of the sun in summer . (c) Wool is a good conductor of heat. | |||
| Right Option : A | |||
| View Explanation | |||
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A 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.
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Yogansh Nyasi
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Aman Kumar Shrivastava
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8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
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