AQA A Level Physics

Which of these is the exchange particle for the strong nuclear force?

• The pion

• The W^-

• The W⁺

• The Z⁰

In beta-plus decay which force exchange particle is involved?

• W⁺

• W^-

• gluon

• photon

Two gamma photons are produced when a muon and an antimuon annihilate each other. (muon E₀ = 105.7 MeV)

What is the minimum frequency of the gamma radiation that could be produced?

• 2.55 × 10¹⁶ Hz

• 5.10 × 10¹⁶ Hz

• 2.55 × 10²² Hz

• 5.10 × 10²² Hz

Which of the following nuclei has the smallest specific charge?

• 
• 
• 
• 

Which of the following shows electron capture?

• 
• 
• 
• 
• 

Gravitational potential

• The work done moving a test mass from infinity to that point

• The difference in energy between two points in a gravitational field

• The work done per unit mass in moving a mass up to a radius, r

• The work done per unit mass in moving a mass from infinity to that point

Geostationary orbit

• An orbit where the period is equal to the rotational period of the object it is orbiting

• An orbit where the period is equal to the orbital period of the object it is orbiting

• An orbit over the equator where the period is equal to the rotational period of the object it is orbiting

• An orbit over the equator where the period is equal to the orbital period of the object it is orbiting

If you double the radius of an orbit, the velocity will...

• Double

• Halve

If a planet has 4 times the mass of its moon and they orbit at a distance R, the point where their will field will cancel out will be...

• R/5 from the planet

• R/4 from the planet

• R/5 from the moon

• R/3 from the moon

The capacitance between two plates increases with

• Shorter plate area and higher applied voltage

• Shorter play area and shorter distance between them

• Larger plate area, longer distance between plates and higher applied voltage

• Larger plate area and shorter distance between plates