AQA AS PHYSICS PAPER 1 ULTIMATE 200 QUESTION EXAM PACK AND MARK SCHEME (7407/1)

AQA AS PHYSICS PAPER 1 ULTIMATE
200 QUESTION EXAM PACK AND
MARK SCHEME (7407/1)


AQA AS Physics Paper 1: Questions 1–50 (Mock Series 2025)
1. Which of the following best describes the constituents of a


meson?
A) An up quark and a down quark.
B) Three up quarks.
C) A quark and its own antiquark (e.g.,




or




).
D) An up, a down, and a strange quark.
Answer: C
Rationale: Mesons consist of a quark-antiquark pair. The


is its own antiparticle and is neutral, represented by the combinations




or




.
2. In a photoelectric effect experiment, if the intensity of the incident
light is doubled while keeping the frequency constant, what happens to
the maximum kinetic energy of the emitted photoelectrons?
A) It remains the same.

,B) It doubles.
C) It increases by a factor of four.
D) It decreases.
Answer: A
Rationale: According to Einstein’s photoelectric equation (




), the maximum kinetic energy depends only on the frequency of the light and the
work function of the metal, not the intensity.
3. What is the specific charge of a nucleus of


? (Take




C and




kg)
A)




C/kg
B)




C/kg
C)

,C/kg
D)




C/kg
Answer: B
Rationale: Specific charge = Charge / Mass. Charge =




C. Mass =




kg.




C/kg.

, 4. Which interaction is responsible for the decay of a neutron into a
proton?
A) Strong Nuclear
B) Weak Nuclear
C) Electromagnetic
D) Gravitational
Answer: B
Rationale: Beta minus decay involves a change in quark flavor (


), which is exclusively mediated by the weak interaction.
5. A wave has a frequency of 50 Hz. What is the phase difference between
two points on the wave that are 0.01 s apart?
A)




rad
B)




rad
C)


rad
D)




rad
Answer: C
Rationale: Phase difference




.