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Wave Behaviour

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Simple Harmonic Motion

Subtopic

Simple Harmonic Motion under Wave Behaviour for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Two particles are oscillating in simple harmonic motion. Particle X is at its maximum positive displacement when Particle Y is at its maximum negative displacement. What is the phase difference between the two particles?

    A.

    0 rad0\text{ rad}

    B.

    π/2 rad\pi/2\text{ rad}

    C.

    2π rad2\pi\text{ rad}

    D.

    π rad\pi\text{ rad}

  2. 2.

    In a frictionless simple harmonic oscillator, at which point in the cycle is the kinetic energy of the system at its maximum?

    A.

    At the maximum positive displacement from equilibrium

    B.

    At the maximum negative displacement from equilibrium

    C.

    At the equilibrium position

    D.

    When the potential energy is equal to the total energy

  3. 3.

    A mass-spring system oscillates with a frequency of 5.0 Hz5.0\text{ Hz}. What is the time period of one complete oscillation?

    A.

    0.20 s0.20\text{ s}

    B.

    5.0 s5.0\text{ s}

    C.

    0.50 s0.50\text{ s}

    D.

    2.0 s2.0\text{ s}

Download the worksheet for Wave Behaviour - Simple Harmonic Motion to practice offline. It includes additional chapter-level practice questions.

The Wave Model

Subtopic

The Wave Model under Wave Behaviour for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A ray of light strikes a plane mirror at an angle of incidence of 2525^{\circ}. What is the total angle between the incident ray and the reflected ray?

    A.

    2525^{\circ}

    B.

    5050^{\circ}

    C.

    9090^{\circ}

    D.

    12.512.5^{\circ}

  2. 2.

    In the context of the wave model, under which condition is the diffraction of a wave through a single slit most pronounced?

    A.

    When the wavelength λ\lambda is much smaller than the slit width bb.

    B.

    When the wavelength λ\lambda is approximately equal to the slit width bb.

    C.

    When the slit width bb is infinitely large.

    D.

    When the wave is a longitudinal wave rather than a transverse wave.

  3. 3.

    When a light wave travels from air into a block of glass, which property of the wave remains unchanged?

    A.

    Speed

    B.

    Wavelength

    C.

    Frequency

    D.

    Direction

Download the worksheet for Wave Behaviour - The Wave Model to practice offline. It includes additional chapter-level practice questions.

Wave Phenomena

Subtopic

Wave Phenomena under Wave Behaviour for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A string of length LL is fixed at both ends and vibrates in its second harmonic. Based on the sequence of points along the string, how many nodes and antinodes are present between the two fixed ends (excluding the ends themselves)?

    A.

    1 node and 2 antinodes

    B.

    2 nodes and 1 antinode

    C.

    2 nodes and 2 antinodes

    D.

    3 nodes and 2 antinodes

  2. 2.

    A monochromatic light ray travels from air into a block of glass with a refractive index of 1.51.5. Which of the following correctly describes the change in frequency, wavelength, and speed of the light?

    A.

    Frequency increases, wavelength decreases, speed decreases.

    B.

    Frequency remains constant, wavelength increases, speed increases.

    C.

    Frequency remains constant, wavelength constant, speed decreases.

    D.

    Frequency remains constant, wavelength decreases, speed decreases.

  3. 3.

    Unpolarized light of intensity I0I_0 is incident on a linear polarizer. The light then passes through a second polarizer (analyzer) whose transmission axis is oriented at 6060^{\circ} to the first. What is the intensity of the light emerging from the second polarizer?

    A.

    I0/2I_0 / 2

    B.

    I0/4I_0 / 4

    C.

    I0/8I_0 / 8

    D.

    3I0/83I_0 / 8

Download the worksheet for Wave Behaviour - Wave Phenomena to practice offline. It includes additional chapter-level practice questions.

Standing Waves and Resonance

Subtopic

Standing Waves and Resonance under Wave Behaviour for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    An air column in a pipe that is closed at one end and open at the other resonates at its fundamental frequency. Which of the following describes the nodes and antinodes in this mode?

    A.

    One node at the closed end and one antinode at the open end.

    B.

    One antinode at the closed end and one node at the open end.

    C.

    Two nodes and one antinode.

    D.

    One node and two antinodes.

  2. 2.

    Which of the following statements is true for all particles located between two adjacent nodes in a stationary (standing) wave?

    A.

    They all have the same amplitude.

    B.

    They all move in phase with each other.

    C.

    They all have different frequencies.

    D.

    They are all at rest at the same time twice per period.

  3. 3.

    A string of length LL is fixed at both ends and vibrates in its fundamental mode. What is the wavelength λ\lambda of the standing wave produced?

    A.

    λ=L/2\lambda = L/2

    B.

    λ=L\lambda = L

    C.

    λ=2L\lambda = 2L

    D.

    λ=4L\lambda = 4L

Download the worksheet for Wave Behaviour - Standing Waves and Resonance to practice offline. It includes additional chapter-level practice questions.

The Doppler Effect

Subtopic

The Doppler Effect under Wave Behaviour for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A siren emits a sound of frequency 600600 Hz. If the siren moves away from a stationary listener at 30 m s130\text{ m s}^{-1} and the speed of sound is 330 m s1330\text{ m s}^{-1}, what is the approximate frequency heard by the listener?

    A.

    660 Hz

    B.

    545 Hz

    C.

    550 Hz

    D.

    655 Hz

  2. 2.

    In astronomy, 'redshift' occurs when light from a distant galaxy is shifted toward longer wavelengths. This suggests that the galaxy is:

    A.

    Moving toward the Earth.

    B.

    Moving away from the Earth.

    C.

    Stationary relative to the Earth.

    D.

    Increasing its temperature.

  3. 3.

    A source of sound is moving at a constant velocity vsv_s as shown in the diagram. Observer A is behind the source, and Observer B is in front of the source. How do the frequencies observed by A and B compare to the source frequency ff?

    A.

    A observes a lower frequency, and B observes a higher frequency.

    B.

    A observes a higher frequency, and B observes a lower frequency.

    C.

    Both A and B observe a higher frequency than ff.

    D.

    Both A and B observe the same frequency ff.

Download the worksheet for Wave Behaviour - The Doppler Effect to practice offline. It includes additional chapter-level practice questions.

Wave Behaviour - IB Grade 12 Physics Notes & Revision | Krit.club