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University of Barishal

Department of Computer Science and Engineering

1st Mid Exam

Course Title: Physics (PHY-1105)

Semester: 1st | Session: 23-24

Time: 60 minutes | Marks: 10.00

Course Teacher: Asad Sir

Exam Date: December 10, 2024

Answer all the following questions. The symbols have their usual meanings.

1.


1)

What do you mean by entropy? Find the efficiency of a Carnot engine working between 227°C and 27°C.

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2.50 Marks
2)

Define mean free path. Differentiate between pyrometer and thermo-electric thermometer.

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2.50 Marks
3)

Define heat. Write down the postulates of the kinetic theory of gases.

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3 Marks
4)

The density of hydrogen at NTP is 0.000089 g/cc. Find the RMS velocity of N2 and O2 molecules.

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3 Marks

Contributors of this Question:

Role Name Date
Prepared By (Teacher): Asad Sir Dec. 10, 2024
Uploaded By: Taminul CSE BU Dec. 10, 2024, 6:21 p.m.
Converted By (Img/PDF to Text): Baishakhi Bir Dec. 27, 2025, 9:48 p.m.
Reviewed By: Obaydul Hasan Nayeem Dec. 27, 2025, 10:39 p.m.