? asked in Science & MathematicsPhysics · 1 month ago

Grade 12 Physics problem?

A wave moves from 1 medium to another. Given that theta2 = 30 degrees, wavelength2 = 0.5cm, v1 = 3cm/s and the relative index of refraction is 1.3, find v2, wavelength1, theta1, and f.

1 Answer

Relevance
  • Anonymous
    1 month ago

    Assuming "2" refers to the denser material, then

    v2 = 3cm/s * 1.3 = 3.9 cm/s ≈ 4 cm/s

    wavelength1 = 0.5cm / 1.3 = 0.38 cm ≈ 0.4 cm

    theta1 = arcsin(sin30º * 1.3) = 45º

    f = v1/wavelength1 = v2/wavelength2 = 7.8 Hz ≈ 8 Hz

Still have questions? Get your answers by asking now.