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LevelAP Physics 2
SubjectAP Physics 2
Year2025 BS
Exam sessionModel questions
Full marks90
Time allowed180 minutes
Questions10, all with step-by-step solutions
A

Multiple Choice

Select the best answer.

10 questions·1 mark each
1Multiple choice1 mark

Cube density 800  kg/m3800\;\text{kg/m}^3 in water (1000  kg/m31000\;\text{kg/m}^3). Fraction submerged?

  • a

    0.50

  • b

    0.60

  • c

    0.80

  • d

    1.00

Correct answer: c

0.80

ρobj/ρw=800/1000=0.80\rho_{obj}/\rho_w=800/1000=0.80.

The correct answer is (c) 0.80.

fluidsbuoyancy
2Multiple choice1 mark

Ideal gas: 2 atm, 300 K, 10 L heated to 600 K at constant pressure. Volume?

  • a

    5 L

  • b

    10 L

  • c

    15 L

  • d

    20 L

Correct answer: d

20 L

V2=10(600/300)=20V_2=10(600/300)=20 L.

The correct answer is (d) 20 L.

thermodynamicsideal-gas-law
3Multiple choice1 mark

q1=+3  μq_1=+3\;\muC, q2=6  μq_2=-6\;\muC, r=0.3r=0.3 m. Force? (k=9×109k=9\times10^9)

  • a

    0.6 N

  • b

    1.8 N

  • c

    5.4 N

  • d

    18 N

Correct answer: b

1.8 N

F=9×109(18×1012)/0.09=1.8F=9\times10^9(18\times10^{-12})/0.09=1.8 N.

The correct answer is (b) 1.8 N.

electrostaticscoulomb-law
4Multiple choice1 mark

2  Ω2\;\Omega, 3  Ω3\;\Omega, 6  Ω6\;\Omega in parallel. ReqR_{eq}?

  • a
    1  Ω1\;\Omega
  • b
    2  Ω2\;\Omega
  • c
    11  Ω11\;\Omega
  • d
    0.5  Ω0.5\;\Omega
Correct answer: a
1  Ω1\;\Omega

1/Req=1/2+1/3+1/6=11/R_{eq}=1/2+1/3+1/6=1. Req=1  ΩR_{eq}=1\;\Omega.

The correct answer is (a) 1  Ω1\;\Omega.

circuitsseries-parallel
5Multiple choice1 mark

Proton (q=1.6×1019q=1.6\times10^{-19} C) at 5×1065\times10^6 m/s perpendicular to B=0.2B=0.2 T. Force?

  • a

    1.6×10141.6\times10^{-14} N

  • b

    8.0×10148.0\times10^{-14} N

  • c

    1.6×10131.6\times10^{-13} N

  • d

    3.2×10133.2\times10^{-13} N

Correct answer: c

1.6×10131.6\times10^{-13} N

F=qvB=1.6×1013F=qvB=1.6\times10^{-13} N.

The correct answer is (c).

magnetismmagnetic-force
6Multiple choice1 mark

Light: air (n=1.0n=1.0) to glass (n=1.5n=1.5) at 3030^\circ. Refraction angle?

  • a

    1515^\circ

  • b

    19.519.5^\circ

  • c

    3030^\circ

  • d

    4545^\circ

Correct answer: b

19.519.5^\circ

sinθ2=sin30/1.5=1/3\sin\theta_2=\sin 30/1.5=1/3. θ219.5\theta_2\approx 19.5^\circ.

The correct answer is (b) 19.519.5^\circ.

opticsrefraction
7Multiple choice1 mark

Work function 4.0 eV. Min frequency? (h=4.14×1015h=4.14\times10^{-15} eV\cdots)

  • a

    2.42×10142.42\times10^{14} Hz

  • b

    4.83×10144.83\times10^{14} Hz

  • c

    6.0×10146.0\times10^{14} Hz

  • d

    9.66×10149.66\times10^{14} Hz

Correct answer: d

9.66×10149.66\times10^{14} Hz

f0=4.0/(4.14×1015)9.66×1014f_0=4.0/(4.14\times10^{-15})\approx 9.66\times10^{14} Hz.

The correct answer is (d).

modern-physicsphotoelectric-effect
8Multiple choice1 mark

Pipe narrows: A1=0.04A_1=0.04, A2=0.01  m2A_2=0.01\;\text{m}^2, v1=2v_1=2 m/s. v2v_2?

  • a

    4 m/s

  • b

    6 m/s

  • c

    8 m/s

  • d

    16 m/s

Correct answer: c

8 m/s

v2=A1v1/A2=8v_2=A_1 v_1/A_2=8 m/s.

The correct answer is (c) 8 m/s.

fluidsbernoulli
9Multiple choice1 mark

Engine: QH=500Q_H=500 J, QC=300Q_C=300 J. Efficiency?

  • a

    20%

  • b

    40%

  • c

    60%

  • d

    80%

Correct answer: b

40%

η=(500300)/500=40%\eta=(500-300)/500=40\%.

The correct answer is (b) 40%.

thermodynamicsheat-transfer
10Multiple choice1 mark

EE at 0.5 m from +2  μ+2\;\muC? (k=9×109k=9\times10^9)

  • a

    7.2×1047.2\times10^4 N/C

  • b

    3.6×1043.6\times10^4 N/C

  • c

    1.8×1041.8\times10^4 N/C

  • d

    1.44×1051.44\times10^5 N/C

Correct answer: a

7.2×1047.2\times10^4 N/C

E=kq/r2=9×109(2×106)/0.25=7.2×104E=kq/r^2=9\times10^9(2\times10^{-6})/0.25=7.2\times10^4 N/C.

The correct answer is (a).

electrostaticselectric-field

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