DP Physics (first assessment 2025)

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Question EXE.2.HL.TZ0.19b

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Date Example questions Example questions Marks available [Maximum mark: 2] Reference code EXE.2.HL.TZ0.19b
Level HL Paper 2 Time zone TZ0
Command term Calculate Question number b Adapted from N/A
b.
[Maximum mark: 2]
EXE.2.HL.TZ0.19b

A beam of electrons is accelerated from rest through a potential difference of 500 V maintained between two plates in a vacuum. The electrons then travel through a circular hole in the +500 V plate.

(b)

Calculate the maximum speed of the electrons in the beam.

[2]

Markscheme

use of ½ mv2 = eV ✓

1.33 × 107 m s−1 ✓

Syllabus sections