Chem/Phys · 4D

Light and sound

Content category 4D. 25 questions in 5 sets, each with reasoning for every answer choice.

Set 1 · Light

  1. Converging lens: image of an object beyond 2fmedium
  2. Photon energy vs. wavelengtheasy
  3. What stays constant when light refractseasy
  4. Photon energy from wavelengtheasy
  5. Total internal reflectioneasy

Set 2 · Optics

  1. Diverging lens image propertieseasy
  2. Concave mirror: object at the center of curvaturemedium
  3. Lens power in dioptersmedium
  4. Snell's law: angle of refractionmedium
  5. Dispersion in a prismmedium

Set 3 · Optics

  1. Double-slit fringe spacingmedium
  2. Converging lens: object inside the focal lengthhard
  3. Concave mirror: finding the imagehard
  4. Critical angle from glass to airhard
  5. Doppler effect: an approaching sourceeasy

Set 4 · Sound

  1. Decibels: a 100-fold change in intensityeasy
  2. Standing waves in a pipe closed at one endmedium
  3. Speed of sound in different mediamedium
  4. Beat frequencymedium
  5. Sound level when distance doublesmedium

Set 5 · Waves

  1. Ultrasound frequency trade-offsmedium
  2. Doppler shift for a moving sourcehard
  3. Wavelength from wave speedeasy
  4. Wavelength of a string's third harmonicmedium
  5. Which waves can be polarized?medium