Physics: Oscillation and Amplitude

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Questions and Answers

What is the term used to describe the movement of a body from its mean position to the maximum displacement in an oscillation?

  • Amplitude (correct)
  • Frequency
  • Time period
  • Vibration

What happens to the amplitude of oscillation for a body oscillating in the air?

  • Gradually decreases (correct)
  • Becomes zero
  • Gradually increases
  • Remains constant

In the context of oscillation, what does the time period refer to?

  • Time taken to complete one oscillation (correct)
  • Maximum displacement of a body
  • Number of oscillations per second
  • Rate of to-and-fro movements

What is the relationship between frequency (v) and time period (T) of an oscillating body?

<p>$v = \frac{1}{T}$ (A)</p> Signup and view all the answers

What unit is used to measure the frequency of oscillation?

<p>Hertz (A)</p> Signup and view all the answers

Which term refers to rapid to-and-fro movements of a body about its mean position?

<p>Vibration (A)</p> Signup and view all the answers

In the context of sound production, what is responsible for producing sound in humans?

<p>'To-and-fro' rate of movements (B)</p> Signup and view all the answers

What aspect of motion is described as 'from A to B, B to C, and then from C to A' in an oscillation?

<p>'To-and-fro' motion (D)</p> Signup and view all the answers

What feature distinguishes one complete oscillation from another?

<p>'Amplitude' (A)</p> Signup and view all the answers

'Sound is produced by a vibrating body.' What type of motion in a vibrating body leads to sound production?

<p>'Vibrational motion' (C)</p> Signup and view all the answers

Flashcards

Amplitude

Maximum displacement from the mean position during oscillation.

Decreasing Amplitude

The gradual reduction in amplitude of an oscillating body due to air resistance.

Time Period (T)

The time required for an oscillating body to complete one full cycle of motion.

Frequency (v) and Time Period (T) Relationship

Frequency is the inverse of the time period: v = 1/T.

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Frequency Unit

Hertz (Hz) is the unit used to measure the frequency of oscillation.

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Vibration

Rapid back-and-forth movement around a central, or mean, position.

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Human Sound Production

Sound production in humans is caused by the rate of 'to-and-fro' movements of vocal cords.

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'To-and-fro' motion

Movement from A to B, B to C, and then from C to A

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Complete Oscillation Feature

Amplitude.

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Vibrational Sound Production

Vibrational motion of a body

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Study Notes

Key Concepts of Oscillation

  • Displacement in Oscillation: The movement from the mean position to the maximum displacement is referred to as amplitude.
  • Amplitude in Air: When a body oscillates in air, its amplitude may gradually decrease due to air resistance, leading to damping of the oscillation.
  • Time Period: The time period is the duration taken to complete one full cycle of oscillation.
  • Frequency and Time Period Relationship: Frequency (ν) is inversely related to the time period (T), expressed as ν = 1/T.
  • Unit of Frequency: The unit for measuring frequency is Hertz (Hz), which represents cycles per second.
  • Rapid Motion: The term for rapid to-and-fro movements of a body about its mean position is called vibration.

Sound Production

  • Source of Sound in Humans: Sound is produced by the vibrating vocal cords in humans.
  • Oscillation Motion Description: The motion described as 'from A to B, B to C, and then from C to A' outlines the path of oscillation over a complete cycle.
  • Complete Oscillation Feature: A complete oscillation consists of a distinct amplitude, which differentiates it from another complete oscillation.
  • Type of Motion for Sound: The vibratory motion of a body is responsible for sound production, leading to pressure waves in the air.

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