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Waves — JEE Main Physics MCQs with Solutions
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Sample questions with solutions
Q1 — medium · theory
P-T diagram of an ideal gas having three 24-4. The translational degrees of freedom ft
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q2 — medium · theory
At 300 K, the rms speed of oxygen molecules
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q3 — medium · theory
For a perfect gas, two pressures P1 and P2 22-3. KTG & THERMODYNAMICS
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q4 — medium · theory
n mole a perfect gas undergoes a cyclic 21-3. KTG & THERMODYNAMICS
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q5 — medium · theory
(2) 24-2. (3) ANSWER KEY 24-4. (2) 24-5. (4)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q6 — medium · theory
For ideal gas energy of 10 molecules
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q7 — medium · numerical
M M PV = nRT
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q8 — medium · theory
different densities ρ , ρ , ρ (in three different 24-5.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q9 — medium · theory
A bicycle tyre is filled with air having pressure system during the process will be (Given
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q10 — medium · theory
are shown in figure. The graph shows: 22-4.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q11 — medium · theory
process ABCA (see figure) consisting of the 21-4.
A. n1F1T1 n2F2T2 ✓ Correct
B. 0 (2) nRT ln2 1
C. n1F1T1 n2F2T2
D. nRTln2 (4) nRT ln2 1
Q12 — medium · theory
Assuming mean free path constant. 24-9. Note: Data is inconsistent in process AB.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q13 — medium · theory
Taking volume constant : P1 P2 22-2. Wadiabatic NR(Tf Ti ) statment1
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q14 — medium · theory
cases) is shown in the figure. Which of the 24-6. and rotational degrees of freedom (f) of CH4
A. ρ < ρ (2) ρ > ρ (1) ft 2 and fr 2 ✓ Correct
B. ft 3 and fr 3
C. ft 3 and fr 2
D. ft 2 and fr 3
Q15 — medium · theory
(2) 21-4. (1) 22-1. (1) 21-6. (2) 21-7. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q16 — medium · numerical
V = ⇒ W = 48 − 3 × (8.3)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q17 — medium · numerical
Collision frequency, U = – W
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q18 — medium · theory
41 5 C 0 i 1.8 105 40 3 40 60
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q19 — medium · theory
(3) 22-5. (3) 23-2. (3) 21-1. (4) 21-2. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q20 — medium · theory
Since CH4 is polyatomic Non-Linear
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q21 — medium · numerical
P = P0 + gh = 105 Pa + 103 × 10 × 40
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q22 — medium · numerical
V0 = 500 cc
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q23 — medium · theory
The number of air molecules per cm3
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q24 — medium · theory
Starting with the same initial conditions, an
A. W1 < W2 < W3 (2) W2 < W3 < W1 ✓ Correct
B. W3 < W1 < W2 (4) W2 < W1 < W3
C. P1 > P2 of oxygen at standard temperature and
D. P1 < P2 pressure. The volume of the vessel in cm3 is :
Q25 — medium · theory
(4) 23-6. (1) 24-8. (1) 22-2. (1) 22-3. (4)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q26 — medium · numerical
+ 1 100 = 350 J
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q27 — medium · theory
In the reported figure, there is a cyclic KTG & THERMODYNAMICS
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q28 — medium · theory
(2) 24-7. (4) 24-9. (4) 24-10. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q29 — medium · theory
diatomic gas. The temperature of the gas 21-9. For an ideal gas the instantaneous change in
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q30 — medium · theory
90
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D