Home › Quizzes › JEE › Physics
JEE Mains 2027: Top Physics Questions — Waves & Thermodynamics
JEE Physics • 10 questions • Free on ExamBattle
Practice Questions
Q1
The root mean square velocity of gas molecules is proportional to:
- A. √T
- B. T
- C. T²
- D. 1/T
Q2
A Carnot engine takes 3000 J from a source at 600 K and gives 1000 J to the sink. The temperature of the sink is:
- A. 100 K
- B. 200 K
- C. 300 K
- D. 400 K
Q3
The number of degrees of freedom for a diatomic gas molecule at moderate temperatures is:
- A. 3
- B. 5
- C. 6
- D. 7
Q4
In a standing wave on a string of length L fixed at both ends, the fundamental mode wavelength is:
- A. L
- B. 2L
- C. L/2
- D. 4L
Q5
A particle undergoes SHM: x = 4sin(2πt + π/6) cm. Its initial displacement at t=0 is:
- A. 2 cm
- B. 4 cm
- C. 2√3 cm
- D. 0
Q6
The Doppler shift for a source moving toward a stationary observer with speed vs (sound speed v) gives an observed frequency:
- A. f₀(v − vs)/v
- B. f₀v/(v − vs)
- C. f₀v/(v + vs)
- D. f₀(v + vs)/v
Attempt this quiz free at ExamBattle. Sign in to earn a score and rank on the leaderboard.