Modern physics

Question 1 of 10

After beta emission, the atomic number of a nucleus

Question 2 of 10

The half-life of a radioactive sample is 5 days. What fraction of it remains after 15 days?

Question 3 of 10

A nucleus emits one alpha and two beta particles. Its atomic number

Question 4 of 10

Alpha particles are

Question 5 of 10

When a nucleus emits an alpha particle, its mass number

Question 6 of 10

An alpha particle is the same as a

Question 7 of 10

The nucleus of ²³⁵U contains 92 protons. How many neutrons does it have?

Question 8 of 10

The emission of electrons from a metal surface when light falls on it is the

Question 9 of 10

The mass defect of a nucleus is 0.03 u. The binding energy is about (1 u = 931 MeV)

Question 10 of 10

Which device detects ionising radiation?