# UPSEE: Important Questions and Preparation Tips – Thermal properties of matter

Dec 1, 2017 12:09 IST
UPSEE/UPTU Examination: Thermal properties of matter

The chapter Thermal properties of matter is a very important topic from the viewpoint of UPSEE/UPTU Examination 2018. About 1-2 questions are always asked from this topic in the examination.

In this article we bring to you the complete chapter notes of chapter Thermal properties of matter including topics like ideal gas equation, thermal expansion (linear, area and volume), heat capacity, specific heat capacity, calorimeter, fusion, normal boiling point, sublimation, three modes of heat transfer (conduction, convection, radiation), Newton’s law of cooling etc.

These chapter notes are prepared by Subject Expert and are based on the latest syllabus of UPSEE/UPTU Examination. These notes are in very concise form and can be used for quick revision before the examination. This article will definitely help you to score full marks in this topic in UPSEE/UPTU Examination 2018.

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Uttar Pradesh State Entrance Examination (UPSEE) is a state level engineering entrance examination for degree level engineering institutions and other professional colleges. It is regulated by Dr. A.P.J. Abdul Kalam Technical University (AKTU) formerly known as Uttar Pradesh Technical University (UPTU).

Important Concepts:

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Some previous year solved questions are given below:

Question 1:

Solution 1:

Hence, the correct option is (a).

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Question 2:

A long silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end (the end which is not dipped in tea) of the spoon becomes hot even without a direct contact with the tea. This phenomenon can be explained mainly by:

(a) thermal expansion

(b) conduction

(c) reflection

Solution 2:

As atoms in the spoon vibrates about their equilibrium positions and transfer energy from one end to other end. This process is conduction

Hence, the correct option is (b).

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Question 3:

Solution 3:

Hence, the correct option is (b).

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Question 4:

A perfectly black body is one where

(a) absorptive power is infinity

(b) absorption point is 0

(c) emmissive power is 1

(d) absorptive power is 1

Solution 4:

A perfectly black body neither reflects nor transmit, (i.e. r = 0, t = 0) any part of the incident radiative energy but absorb whole of it or we can say its absorptive power is 1.

Hence, the correct option is (d).

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