DP Physics (first assessment 2025)

Question SPM.1A.HL.TZ0.39

Date	May Specimen-2023	Marks available	[Maximum mark: 1]	Reference code	SPM.1A.HL.TZ0.39
Level	HL	Paper	1A	Time zone	TZ0
Command term		Question number	39	Adapted from	N/A

39.

[Maximum mark: 1]

SPM.1A.HL.TZ0.39

Monochromatic light of frequency $f_{1}$ is incident on the surface of a metal. The stopping voltage for this light is $V_{1}$ . When the frequency of the radiation is changed to $f_{2}$ , the stopping voltage is $V_{2}$ .

What is the quantity $\frac{V_{2} - V_{1}}{f_{2} - f_{1}}$ equal to?

A. $h$

B. $\frac{h}{e}$

C. $\frac{h}{c}$

D. $\frac{h c}{e}$

[1]

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Syllabus sections

E. Nuclear and quantum physics

E. Nuclear and quantum physics » E.2 Quantum physics

Question SPM.1A.HL.TZ0.39

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