College Physics Exam Paper - First Semester
Class:; Student ID:; Name:; Score:___
Section I: Multiple Choice Questions (30 points)
1. Given the vibration equation of a particle: x = A cos(ωt + φ), when time t = T/4 (T is
the period), the particle's velocity is: (A) -Aωsinφ; (B) Aωsinφ; (C) -Aωcosφ; (D)
Aωcosφ [ ]
2.Given the wave equation y = A cos(Bt - Cx), where A, B, and C are positive
constants: (A) Wave speed is C/B; (B) Period is 1/B; (C) Wavelength is C/2π; (D)
Angular frequency is B [ ]
3.According to the Huygens-Fresnel principle, if the wavefront of light at a given time
is S, then the intensity at point P in front of S is determined by: (A) Sum of vibration
amplitudes; (B) Sum of light intensities; (C) Square of the sum of vibration
amplitudes; (D) Coherent superposition of vibrations [ ]
4.To increase the fringe spacing in a double-slit interference pattern: (A) Move the
screen closer to the slits; (B) Reduce the slit spacing; (C) Slightly narrow the slit
width; (D) Use monochromatic light with a shorter wavelength [ ]
5.A beam of natural light I0 passes perpendicularly through two polarizers with
polarization directions at a 45-degree angle to each other. The transmitted light
intensity is: (A) ; (B) I0/4; (C) I0/2; (D) [ ]
6.The Compton effect confirms that in microscopic interactions, the following laws
strictly apply: (A) Conservation of momentum and kinetic energy; (B) Newton's laws
and conservation of kinetic energy; (C) Conservation of kinetic and mechanical
energy; (D) Conservation of momentum and energy [ ]
7.In a photoelectric experiment, the relation between photoelectron kinetic energy
and incident light frequency is shown in a graph. The work function W and Planck
constant h of the metal are: (A) W = OQ, h = OR; (B) W = OR, h = PQ; (C) W = OP, h =
OP/OQ; (D) W = QS, h = QS/OS [ ]
8.Which of the following statements are correct: (1) All inertial frames are equivalent
with respect to physical laws. (2) The speed of light in vacuum is independent of light
frequency and the source's motion. (3) In any inertial frame, the speed of light in
vacuum is the same in all directions. (A) Only (1) and (2) are correct; (B) Only (1) and
(3) are correct; (C) Only (2) and (3) are correct; (D) All three statements are correct [ ]
Class:; Student ID:; Name:; Score:___
Section I: Multiple Choice Questions (30 points)
1. Given the vibration equation of a particle: x = A cos(ωt + φ), when time t = T/4 (T is
the period), the particle's velocity is: (A) -Aωsinφ; (B) Aωsinφ; (C) -Aωcosφ; (D)
Aωcosφ [ ]
2.Given the wave equation y = A cos(Bt - Cx), where A, B, and C are positive
constants: (A) Wave speed is C/B; (B) Period is 1/B; (C) Wavelength is C/2π; (D)
Angular frequency is B [ ]
3.According to the Huygens-Fresnel principle, if the wavefront of light at a given time
is S, then the intensity at point P in front of S is determined by: (A) Sum of vibration
amplitudes; (B) Sum of light intensities; (C) Square of the sum of vibration
amplitudes; (D) Coherent superposition of vibrations [ ]
4.To increase the fringe spacing in a double-slit interference pattern: (A) Move the
screen closer to the slits; (B) Reduce the slit spacing; (C) Slightly narrow the slit
width; (D) Use monochromatic light with a shorter wavelength [ ]
5.A beam of natural light I0 passes perpendicularly through two polarizers with
polarization directions at a 45-degree angle to each other. The transmitted light
intensity is: (A) ; (B) I0/4; (C) I0/2; (D) [ ]
6.The Compton effect confirms that in microscopic interactions, the following laws
strictly apply: (A) Conservation of momentum and kinetic energy; (B) Newton's laws
and conservation of kinetic energy; (C) Conservation of kinetic and mechanical
energy; (D) Conservation of momentum and energy [ ]
7.In a photoelectric experiment, the relation between photoelectron kinetic energy
and incident light frequency is shown in a graph. The work function W and Planck
constant h of the metal are: (A) W = OQ, h = OR; (B) W = OR, h = PQ; (C) W = OP, h =
OP/OQ; (D) W = QS, h = QS/OS [ ]
8.Which of the following statements are correct: (1) All inertial frames are equivalent
with respect to physical laws. (2) The speed of light in vacuum is independent of light
frequency and the source's motion. (3) In any inertial frame, the speed of light in
vacuum is the same in all directions. (A) Only (1) and (2) are correct; (B) Only (1) and
(3) are correct; (C) Only (2) and (3) are correct; (D) All three statements are correct [ ]
