Physics (AS & A Level) · Feb / March 2019 · Paper 12 · Question 39

A neutron $^{1}_{0}\text{n}$ is fired at a $^{235}_{92}\text{U}$ nucleus. The neutron is absorbed by the nucleus which then splits to form nuclei of $^{141}_{56}\text{Ba}$ and $^{92}_{36}\text{Kr}$. What is the number of neutrons emitted when the $^{235}_{92}\text{U}$ nucleus splits?

1. A0
2. B1
3. C2
4. D3

As printed in the paper