Quelpr
12 marksProperties of Waves

CAPE Physics Unit 1 · 1999 · Paper 2 · Question 7(c)(i)

White light of wavelength 400 nm – 700 nm is incident on a plane diffraction grating ruled 500 lines per mm.

Find the angular breadth of the first-order spectrum. Show your result on a labelled diagram.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 7(a)Explain the phenomena involved in the formation of a diffraction pattern by a plane diffraction grating.[2 marks]
  2. 7(b)Describe, with the aid of a diagram, an experiment to measure the wavelength of yellow light from a straight filament bulb, using a diffraction grating having…[6 marks]
  3. 7(c)(ii)Show that the second-order spectrum of the white light overlaps with the third-order spectrum.[1 mark]

More practice: the rest of this paper · more Properties of Waves questions · all CAPE Physics Unit 1 past papers