IB Physics-Theme C- Waves- waves--Part#3

The graph shows the variation with time t of the velocity v of an object
undergoing simple harmonic motionSHM). At which velocity does the
displacement from the mean position take a maximum positive value?
- A pipe of fixed length is closed at one end. What is
(third harmonic frequency of pipe/first harmonic frequency of pipe)
- Unpolarized light of intensity I is incident on the first of two polarizing
sheets. Initially the planes of polarization of the sheets are perpendicular.
Which sheet must be rotated and by what angle so that light of intensity can
emerge from the second sheet?
- A girl in a stationary boat observes that 10 wave crests pass the boat
every minute. What is the period of the water waves?
- The graph shows the variation with distance x of the displacement of the
particles of a medium in which a longitudinal wave is travelling from left
to right. Displacements to the right of equilibrium positions are positive.
Which point is at the centre of a compression?
- The frequency of the first harmonic standing wave in a pipe that is open
at both ends is 200 Hz. What is the frequency of the first harmonic in a
pipe of the same length that is open at one end and closed at the other?
- A travelling wave of period 5.0 ms travels along a stretched string at a
speed of 40 m s . Two points on the string are 0.050 m apart.
What is the phase difference between the two points?
- The diagram shows an interference pattern observed on a screen in a
double-slit experiment with monochromatic light of wavelength 600 nm.
The screen is 1.0 m from the slits.
- Monochromatic light of wavelength in air is incident normally on a thin
liquid film of refractive index that is suspended in air. The rays are
shown at an angle to the normal for clarity. What is the minimum thickness of the film so that the reflected light undergoes constructive interference?
- The diagram shows the diffraction pattern for light passing through a
single slit. what is : wavelength of light/width of slit
- Light is incident on a diffraction grating. The wavelength lines 600.0 nm
and 601.5 nm are just resolved in the second order spectrum. How many slits of the diffraction grating are illuminated?
Topic 4 and topic 9 waves playlist: