2017 Paper 1 (04/04/2025)

Question 1

Electron Capture?

Answer 1

p + e- -> n + Ve

Question 2

Decay Fundamental Interaction?

Answer 2

Weak Interaction due to there being a quark flavour which changes

Question 3

Emission from nucleus when proton number decrease but nucleon number stays the same?

Answer 3

It is beta minus decay. In this type of interaction there is no photon released, but instead an electron and antineutrino are released

Question 4

Modelling frequencies drawbacks?

Answer 4

A model is dependent on constants. But, at large tensions the mass per unit length and length won’t be constant. This is due to higher tensions stretching wire leading to length increasing, mass per unit length decreasing which results in a higher frequency

Question 5

Colour Spectrum Wavelengths?

Answer 5

The more red a light ray is the longer its wavelength but the more purple it is the shorter the wavelength

Question 6

Colour Spectrum Refraction and Diffraction?

Answer 6

The more purple the light ray the more refraction it will experience however it diffracts less. But, the more red the light ray is the less refraction it will have however it experiences more diffraction

Question 7

Refractive Index and Critical Angle?

Answer 7

The lower the refractive index the higher the critical angle but the higher the refractive index the lower the critical angle

Question 8

Force in only one component?

Answer 8

This is identified from a resultant being perpendicular to a particular plane

Question 9

Affects of additional force on a ladder?

Answer 9

Vertical reaction force from the ground increases. Frictional force otherwise force in the horizontal component increases. Reaction force from the wall increases. Weight of system otherwise load on ladder will increase.