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Question 21N.2.HL.TZ0.d.i

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Date November 2021 Marks available [Maximum mark: 2] Reference code 21N.2.HL.TZ0.d.i
Level HL Paper 2 Time zone TZ0
Command term Explain, State Question number d.i Adapted from N/A
d.i.
[Maximum mark: 2]
21N.2.HL.TZ0.d.i

Solar radiation falls onto a metallic surface carried by the spacecraft causing the emission of photoelectrons. The radiation has passed through a filter so it is monochromatic. The spacecraft is moving away from the Sun.

 State and explain what happens to the kinetic energy of an emitted photoelectron.

[2]

Markscheme

stays the same ✓

as energy depends on the frequency of light ✓

 

Allow reference to wavelength for MP2.

Award MP2 only to answers stating that KE decreases due to Doppler effect.

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