Waves, sound, and light

Thin lens and mirror equation

1/f = 1/o + 1/i  ·  m = −i/o  ·  f = R/2

f focal length, o object distance, i image distance, m magnification, R radius of curvature

Watch forPositive i: real and inverted. Negative i: virtual and upright.

Apply it · 4 questions

  1. Converging lens: object inside the focal lengthLight and sound · set 3 · hard
  2. Concave mirror: finding the imageLight and sound · set 3 · hard
  3. Converging lens: image of an object beyond 2fLight and sound · set 1 · medium
  4. Concave mirror: object at the center of curvatureLight and sound · set 2 · medium