3 marksProperties of Waves

CAPE Physics Unit 1 · 2017 · Paper 2 · Question 2(c)(i)

In Young's double slit experiment, the slit spacing was 0.56 mm and the distance across the four-fringe spacing was 3.6 mm when the screen was at a distance of 0.8 m from the slits.

Calculate the wavelength of the monochromatic light used in this experiment.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

2(a)With the aid of a labelled diagram, describe how the pieces of apparatus shown in Figure 3 can be used to disprove the theory of the particulate nature of…[6 marks]
2(b)With the aid of an appropriate diagram, show that for Young's double slit experiment, y = λ D/a, where λ is the wavelength of the source, a is the slit…[4 marks]
2(c)(ii)On a suitable sketch, indicate the intensity variation of the fringes from the central maximum to the fourth bright fringe.[2 marks]

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