DP Physics (first assessment 2025)

Question EXE.2.SL.TZ0.b

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

[Maximum mark: 2]

EXE.2.SL.TZ0.b

The following data are given:

Binding energy per nucleon of ${}_{92}^{235}U$ = 7.591 MeV

Binding energy per nucleon of caesium-137 $({}_{55}^{137}{Cs})$ = 8.389 MeV

Binding energy per nucleon of rubidium-95 $({}_{37}^{95}{Rb})$ = 8.460 MeV

Calculate, in MeV, the energy released in the reaction.

[2]

Markscheme

$137 \times 8.389 + 95 \times 8.460 - 235 \times 7.591$ ✓

169 «MeV» ✓

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