year 12 assessment dec. 2020

Describe the strong nuclear force at a distance of

 $2\times10^{-16}m$  

• strongly repulsive

• strongly attractive

• weakly attractive

• weakly repulsive

• no force

In electron-proton collision

• The proton releases a W+ boson

• The electron releases a W+ boson

• The proton releases a W- boson

• The electron releases a W- boson

On a Feynmann diagram, the passing of time is represented going...

• up the page

• down the page

• towards the right

• towards the left.

How do waves superimpose on one another?

• by adding their frequencies
• by adding their wavelengths
• by adding their disturbances
• by adding their speeds

The exchange particle for strong interaction is....

• W bosons

• pions

• photons

• lepton number

All kaons....

• have a lepton number

• have a baryon number

• have a strangeness

Select the correct quark composition of a positive kaon

• up and anti-strange

• down and anti-strange

• up and strange

• down and strange

• anti-up and strange

When a neutron is converted into a proton

• only an electron is produced

• an electron and a neutrino are produced

• an electron and an antineutrino are produced

• an electron, a neutrino and an antineutrino are produced

Assuming it to be 100% efficient, calculate the power of a 432nm light bulb if 6x10^20 photons are released per minute. Give your answer to 2 s.f. Do not include a unit.

Which is a definition of a meson?

• A particle made up of quarks that is affected by the strong nuclear force.

• A type of hadron made up of a quark and an antiquark

• A type of hadron made up of three quarks.