Quelpr
2 marksWave Parameters

CSEC Physics · 1990 · Paper 2 · Question 1(c)(i)

Plane electromagnetic wavefronts travel in air at 3.0 x 10^8 m s^-1 and hit a plane refracting surface at an angle of 30°. The wavelength in air is 4.0 x 10^-7 m and velocity in the second medium is 2.2 x 10^8 m s^-1.

Calculate the frequency of the waves in air.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(i)State the amplitude and wavelength of the wave.[2 marks]
  2. 1(a)(ii)Calculate the period and velocity of the wave.[3 marks]
  3. 1(b)Complete the diagrams in Figure 2 to show the wavefronts after passing through (i) a narrow gap and (ii) a wide gap.[4 marks]
  4. 1(c)(ii)Calculate the wavelength of the waves in the second medium and the angle of refraction.[5 marks]

More practice: the rest of this paper · more Wave Parameters questions · all CSEC Physics past papers