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Question 21M.1.HL.TZ1.13

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1.HL.TZ1.13
Level HL Paper 1 Time zone TZ1
Command term Question number 13 Adapted from N/A
13.
[Maximum mark: 1]
21M.1.HL.TZ1.13

Monochromatic light of wavelength λ is incident on a double slit. The resulting interference pattern is observed on a screen a distance y from the slits. The distance between consecutive fringes in the pattern is 55 mm when the slit separation is a.

λ, y and a are all doubled. What is the new distance between consecutive fringes?

A. 55 mm

B. 110 mm

C. 220 mm

D. 440 mm

[1]

Markscheme

B

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