A-Level Physics Paper 2 Quiz

What is the primary function of control rods in a nuclear reactor?

• To cool down the reactor

• To generate electricity

• To increase the speed of neutrons

• To absorb neutrons

Which of the following is a similarity between nuclear fission and fusion?

• Both occur naturally on Earth

• Both require slow-moving neutrons

• Both release energy

• Both involve splitting a large nucleus

In nuclear fusion, what is a key difference compared to fission?

• Fusion uses uranium as fuel

• Fusion is easier to achieve

• Fusion involves combining nuclei

• Fusion releases less energy

How is the energy per kilogram calculated for nuclear reactions?

• By dividing the total energy by the number of reactions

• By multiplying the energy per reaction by the number of particles

• By adding the energy of all particles involved

• By dividing the mass by the molar mass and multiplying by Avogadro's number

What is the vertical acceleration of an electron between parallel plates?

• It is constant regardless of the field

• It is calculated using the electric field and charge

• It is zero due to no vertical force

• It is determined by the gravitational force

How is the time taken for an electron to travel between plates determined?

• By calculating the force on the electron

• By dividing the distance by the horizontal speed

• By measuring the voltage across the plates

• By using the vertical acceleration

What happens to a positron in an electric field between plates?

• It is attracted to the positive plate

• It follows the same path as an electron

• It is deflected downwards

• It is deflected upwards

How can a uniform magnetic field be used to select beta particles with a specific speed?

• By aligning the field parallel to the electric field

• By adjusting the field to cancel vertical deflection

• By using a non-uniform field

• By increasing the field strength

What is the relationship between electric and magnetic forces in selecting particle speeds?

• They are equal when the particle moves at a specific speed

• Magnetic force is always greater

• They are unrelated

• Electric force is always greater

Why is it important to use both electric and magnetic fields in particle selection?

• To increase the speed of particles

• To select particles with a specific speed

• To ensure particles move in a straight line

• To cancel out gravitational forces