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Question 20N.3.HL.TZ0.7a

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.3.HL.TZ0.7a
Level HL Paper 3 Time zone TZ0
Command term Calculate Question number a Adapted from N/A
a.
[Maximum mark: 1]
20N.3.HL.TZ0.7a

In the Pound–Rebka–Snider experiment, a source of gamma rays was placed 22.6 m vertically above a gamma ray detector, in a tower on Earth.

(a)

Calculate the fractional change in frequency of the gamma rays at the detector.

[1]

Markscheme

«∆ff=g∆hc2=9.81×22.6c2»∆ff=2.46×10-15 ✓

Examiners report

The calculation was easily done by most candidates.

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