Agniveer Army Technical Thermodynamics & Kinetic Theory Questions
Top 20 Practice MCQs — with Solutions & Shortcuts
This page covers the top 20 Agniveer Army Technical Thermodynamics & Kinetic Theory questions with full solutions, difficulty grading, and exam-specific shortcuts. All 4 subtopics are covered with graded practice MCQs.
If the temperature of an ideal gas is increased from 300 K to 600 K while volume remains constant, by what factor does the pressure increase?
Q2Easy
The equation of oscillation of a particle is x = 8 sin(5t) cm, where t is in seconds. What is the frequency of oscillation?
Q3Easy
According to kinetic theory, the average kinetic energy of a gas molecule at temperature T is directly proportional to which quantity?
Q4Easy
Which of the following is an intensive property of a thermodynamic system?
Q5Easy
The root mean square speed of gas molecules depends on which of the following factors?
Q6Easy
A gas has 2 × 10²³ molecules at 400 K. If the Boltzmann constant k = 1.38 × 10⁻²³ J/K, what is the total average kinetic energy of all molecules?
Q7Easy
In an adiabatic process, 400 J of work is done on a gas. What is the change in internal energy of the gas?
Q8Easy
A wave completes 4 oscillations in 2 seconds. What is its time period?
Q9Easy
A particle undergoes simple harmonic motion with time period T = 4 seconds. At t = 0, it is at the mean position. How much time will it take to reach the maximum displacement for the first time?
Q10Easy
A gas absorbs 500 J of heat and expands against an external pressure, doing 200 J of work. What is the change in internal energy of the gas?
Q11Easy
A simple pendulum of length 1 m oscillates with a time period of 2 seconds. What is the acceleration due to gravity at that location? (Use π² ≈ 10)
Q12Easy
A rigid container filled with an ideal gas is heated. Which thermodynamic process does this represent?
Q13Easy
A mass-spring system oscillates with amplitude 5 cm and angular frequency 10 rad/s. What is the maximum velocity of the mass?
Q14Easy
At the same temperature, which gas will have the highest average kinetic energy per molecule?
Q15Easy
What is the SI unit of wave amplitude?
Q16Easy
A heat engine receives 1000 J of heat from a hot reservoir and releases 600 J to a cold reservoir in one cycle. What is the efficiency of the engine?
Q17Easy
A wave travels with a frequency of 50 Hz and wavelength of 0.4 m. What is the wave velocity?
Q18Easy
Which of the following is a characteristic of transverse waves?
Q19Easy
A sound wave has a wavelength of 2 m and travels at 340 m/s in air. What is its frequency?
Q20Easy
A pendulum bob of mass 200 g oscillates with amplitude 10 cm. If the time period is 2 seconds, what is the maximum kinetic energy of the bob? (Use π² ≈ 10)
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