Oscillations & Waves

Q. If the amplitude of a wave is tripled, what happens to its energy?
  • A. Increases by a factor of 3
  • B. Increases by a factor of 6
  • C. Increases by a factor of 9
  • D. Remains the same
Q. If the angular frequency of a simple harmonic motion is 5 rad/s, what is the time period?
  • A. 0.2 s
  • B. 0.4 s
  • C. 1.25 s
  • D. 2 s
Q. If the damping ratio of a system is greater than 1, what type of damping is present?
  • A. Underdamped
  • B. Critically damped
  • C. Overdamped
  • D. Free oscillation
Q. If the frequency of a simple harmonic motion is doubled, what happens to the time period?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the frequency of a simple harmonic oscillator is halved, what happens to the period?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the frequency of a sound wave is doubled, what happens to its wavelength in a given medium?
  • A. Doubles
  • B. Halves
  • C. Remains the same
  • D. Increases by a factor of four
Q. If the frequency of a sound wave is doubled, what happens to its wavelength?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the frequency of a wave is doubled, what happens to its wavelength, assuming the speed of the wave remains constant?
  • A. Wavelength doubles
  • B. Wavelength halves
  • C. Wavelength remains the same
  • D. Wavelength quadruples
Q. If the frequency of a wave is doubled, what happens to its wavelength?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the mass of a simple harmonic oscillator is doubled while keeping the spring constant the same, how does the period change?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Cannot be determined
Q. If the natural frequency of a damped oscillator is 5 rad/s and the damping ratio is 0.2, what is the damped frequency?
  • A. 4.8 rad/s
  • B. 5 rad/s
  • C. 5.2 rad/s
  • D. 5.5 rad/s
Q. If the speed of a wave in a medium is 300 m/s and its wavelength is 3 m, what is the frequency of the wave?
  • A. 100 Hz
  • B. 150 Hz
  • C. 200 Hz
  • D. 300 Hz
Q. If the total energy of a simple harmonic oscillator is 50 J and the mass is 2 kg, what is the maximum speed of the mass?
  • A. 5 m/s
  • B. 10 m/s
  • C. 15 m/s
  • D. 20 m/s
Q. If two sound waves of the same frequency interfere constructively, what happens to the resultant amplitude?
  • A. It decreases
  • B. It remains the same
  • C. It doubles
  • D. It becomes zero
Q. If two waves of the same frequency interfere constructively, what is the result?
  • A. A wave of lower amplitude
  • B. A wave of higher amplitude
  • C. No wave
  • D. A standing wave
Q. If two waves traveling in opposite directions interfere constructively, what is the result?
  • A. A smaller amplitude wave
  • B. A larger amplitude wave
  • C. No wave
  • D. A standing wave
Q. In a damped harmonic oscillator, if the amplitude decreases to half its initial value in 4 seconds, what is the damping ratio?
  • A. 0.25
  • B. 0.5
  • C. 0.75
  • D. 1.0
Q. In a damped harmonic oscillator, if the damping coefficient is increased, what happens to the amplitude of oscillation?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. In a damped harmonic oscillator, if the damping coefficient is increased, what happens to the time period of oscillation?
  • A. Time period increases
  • B. Time period decreases
  • C. Time period remains the same
  • D. Time period becomes zero
Q. In a damped harmonic oscillator, if the mass is doubled while keeping the damping coefficient constant, what happens to the damping ratio?
  • A. Doubles
  • B. Halves
  • C. Remains the same
  • D. Increases by a factor of √2
Q. In a damped harmonic oscillator, what effect does increasing the damping coefficient have on the oscillation?
  • A. Increases amplitude
  • B. Decreases amplitude
  • C. Increases frequency
  • D. Decreases frequency
Q. In a damped harmonic oscillator, what happens to the amplitude of oscillation over time?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Oscillates
Q. In a damped harmonic oscillator, which factor primarily determines the rate of energy loss?
  • A. Mass of the oscillator
  • B. Spring constant
  • C. Damping coefficient
  • D. Frequency of oscillation
Q. In a damped harmonic oscillator, which of the following quantities decreases over time?
  • A. Amplitude
  • B. Frequency
  • C. Angular frequency
  • D. Phase constant
Q. In a damped harmonic oscillator, which of the following statements is true?
  • A. Energy is conserved
  • B. Amplitude decreases over time
  • C. Frequency increases over time
  • D. Phase remains constant
Q. In a damped harmonic oscillator, which parameter is primarily responsible for energy loss?
  • A. Mass
  • B. Spring constant
  • C. Damping coefficient
  • D. Driving force
Q. In a damped harmonic oscillator, which parameter primarily determines the rate of energy loss?
  • A. Mass of the oscillator
  • B. Spring constant
  • C. Damping coefficient
  • D. Driving force
Q. In a damped oscillator, if the energy decreases to 25% of its initial value in 10 seconds, what is the damping ratio?
  • A. 0.1
  • B. 0.2
  • C. 0.3
  • D. 0.4
Q. In a forced oscillation system, if the driving frequency is equal to the natural frequency, what phenomenon occurs?
  • A. Damping
  • B. Resonance
  • C. Phase shift
  • D. Destructive interference
Q. In a forced oscillation system, the driving frequency is 5 Hz and the natural frequency is 4 Hz. What is the ratio of the driving frequency to the natural frequency?
  • A. 0.8
  • B. 1
  • C. 1.25
  • D. 1.5
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