AQA PHYSICS

AQA-7408-3BE-PHYSICS FINAL MARK SCHEME PAPER 3BE-SECTION B:Electronics-A LEVEL-Jun24-v1.0 Question Answers Additional comments/Guidelines Mark AO 01.1 When B = logic 0, (point D is logic 1.) (Result: closes the lower AND gate and opens the upper AND gate.) Only the 1024 Hz signal is allowed to (pass through to the OR gate) output Q.  When B = logic 1,( point D is logic 0). (Result: closes the upper AND gate and opens the lower AND gate.) Only the 512 Hz signal is allowed to (pass t...

AQA-7408-3BD-PHYSICS FINAL MARK SCHEME PAPER 3BD-SECTION B:Turning points in physics-A LEVEL-Jun24-v1.0 Question Answers Additional comments/Guidance Mark AO 01.1 Electrostatic force and magnetic force are equal in magnitude OR opposite in direction / magnetic force down and electrostatic force up OR equal and opposite Electrostatic force and magnetic force are equal in magnitude AND opposite in direction / magnetic force down and electrostatic force up AND Balan...

AQA-7408-3BC-PHYSICS FINAL MARK SCHEME PAPER 3BC-SECTION B:Engineering physics-A LEVEL-Jun24-v1.0. Question Answers Additional comments/Guidance Mark AO 01.2 The mark scheme gives some guidance as to what statements are expected to be seen in a 1- or 2-mark (L1), 3- or 4-mark (L2) and 5- or 6-mark (L3) answer. Guidance provided in section 3.10 of the ‘Mark Scheme Instructions’ document should be used to assist marking this question. Mark Criteria 6 All three areas covered wit...

AQA-7408-3BB-PHYSICS FINAL MARK SCHEME PAPER 3BB-SECTION B:Medical physics-A LEVEL-Jun24-v1.0. Question Answers Additional comments/Guidelines Mark AO 01.1 myopia  Allow short sightedness 1 AO2 Question Answers Additional comments/Guidelines Mark AO 01.2 Max one from  • Evidence of with u = ∞ and v =-6 a • Correct use of a power equationb 1 P = = 0.17(D) f −        b 1 끫뢦 = 1 끫룄 + 1 끫룆 with: • u = ∞, v = (-)6 ...

AQA-7408-3BA-PHYSICS FINAL MARK SCHEME PAPER 3BA-SECTION B-A LEVEL-Jun24-v1.0. Question Answers Additional comments/Guidance Mark AO 01.1 Determination of focal length of objective OR adds their fo and fe  1.67 (m) CAO  fo = M × fe = 75 × 0.022 = 1.65 (m) No sf penalty Condone 2 sf 1.7 2 AO2 Question Answers Additional comments/Guidance Mark AO 01.2 Determination of angle subtended by Jupiter at unaided eye OR uses: distance to Jupiter = diameter of Jupiter ÷ angle s...

AQA-7408-3A-PHYSICS FINAL MARK SCHEME PAPER 3A-SECTION A-A LEVEL-Jun24-v1.0. Question Answers Additional comments/Guidelines Mark AO 01.1 (±) 0.5(0) mm CAO  1 AO2 Question Answers Additional comments/Guidelines Mark AO 01.2 6.72 mm  tick in second box 1 AO2 000006 Page 6 of 24 PHYSICS MARK SCHEME – A-LEVEL PHYSICS – 6A24 7 Question Answers Additional comments/Guidelines Mark AO 01.3 use of ratchet with valid justification OR use of thimble and then the ratchet with...

AQA-7408-2-PHYSICS FINAL MARK SCHEME PAPER 2-A LEVEL-Jun24-v1.0. Question Answers Additional comments/Guidelines Mark AO 01.1 n = 43.1  (≥ 2 SF) ( ) 3 105 10 1 8.31 273 20.0 n × × = × + 1 AO1 Question Answers Additional comments/Guidelines Mark AO 01.2 Use of 끫뢴 = 끫븘끫븘 끫뢶끫뢂끫롨 OR 끫뢴 = 끫븘끫븘 OR use of 끫뢴molecule = 끫뢴gas 끫뢂끫롨 OR 끫뢂 = 끫뢶끫뢂끫롨 OR (끫뢠rms) 2 = 3끫뢺 끫븘 seen in any form OR u...

Question Answers Additional comments/Guidelines Mark AO 01.1 gravity, weak (nuclear), strong (nuclear), electromagnetic  Any order, all four must be correct. Condone any reference to “interaction” or “force” Condone “gravitational” Do not accept ‘electrostatic’, ‘gravitational potential’, ‘em’, ‘EM’ 1 AO1 Question Answers Additional comments/Guidelines Mark AO 01.2 proton, beta minus, (electron) antineutrino all correct  Allow alternative ways of wr...

AQA-7407-2-PHYSICS FINAL MARK SCHEME PAPER 2-Jun24-v1.0. Question Answers Additional Comments/Guidance Mark AO 01.1 calculates, using all 4 values, a mean of 0.418 (s)  Expect to see 25.08 (mean average) divided by 60, or 100.32 (sum) divided by 240 in working 1 AO2 Question Answers Additional Comments/Guidance Mark AO 01.2 2.75 cycles (between P and Q) 1 TPQ = 0.42 × their number of cycles 2 Expect TPQ = 1.15, 1.16 or 1.2 (s) 2 Allow use of >2 sf TPQ that rounds ...

AQA-7407-1-PHYSICS FINAL MARK SCHEME PAPER 1-AS LEVEL-Jun24-v1.1. Question Answers Additional Comments/Guidance Mark AO 01.1 MP1 To conserve charge OR To conserve lepton number MP2 Idea of how charge is conserved: e.g. LHS = 0 + 17 RHS = 18 + (−1) AND Idea of how lepton number is conserved: e.g. LHS = 1 + 0 RHS = 0 + 1  Must have some detail in support of both conservation explanation for 2 marks. For charge conservation condone description of RHS only: idea of ...

AQA-7408-3BE-PHYSICS QUESTION PAPER 3 SECTION B:Electronics-A LEVEL-17Jun24-AM Section B box Answer all questions in this section. 0 1 A toy manufacturer is designing a two-tone siren for use in small battery-operated cars. Figure 1 shows design Option 1. Option 1 uses three separate signal generators feeding into a logic sub-system. The signal generators produce logic-compatible 9 V square waves of frequencies 1024 Hz, 1 Hz and 512 Hz. Figure 1 The waveforms shown are not to...

AQA-7408-3BD-PHYSICS QUESTION PAPER 3 SECTION B:Turning points in physics-A LEVEL-17Jun24-AM. Section B box Answer all questions in this section. 0 1 . 1 Figure 1 shows apparatus used in an experiment to measure the specific charge of the electron. Figure 1 Electrons are accelerated by the potential difference VA. The electrons then enter the region between two parallel metal plates, shown shaded in Figure 1. The parallel metal plates are separated by a distance d with a potentia...

AQA-7408-3BC-PHYSICS QUESTION PAPER 3 SECTION B:Engineering physics-A LEVEL-17Jun24-AM. 3 *03* Turn over ► IB/M/Jun24/7408/3BC Do not write outside the Section B box Answer all questions in this section. 0 1 A heavy turntable is mounted on a fixed base. The turntable can rotate freely on a low-friction bearing. 0 1 . 1 Figure 1 shows a propeller unit fixed to the centre of the turntable. The propeller unit consists of a motor-driven propeller and a battery. The propeller...

AQA-7408-3BB-PHYSICS QUESTION PAPER 3 SECTION B:Medical physics-A LEVEL-17Jun24-AM. Section B box Answer all questions in this section. 0 1 . 1 A human eye has a far point of 6.0 m. State the name of this defect of vision. [1 mark] 0 1 . 2 Calculate the power of the correcting lens required for this eye. [2 marks] power = D 0 1 . 3 An eye with astigmatism requires the following prescription: −4.00 –0.75 ×30 Which row identifies the meaning of each number? Tick () one bo...

AQA-7408-3BA-PHYSICS QUESTION PAPER 3 SECTION B:Astrophysics-A LEVEL-17Jun24-AM. Section B box Answer all questions in this section. 0 1 A student uses a refracting telescope in normal adjustment to make observations of Jupiter. The telescope has an angular magnification of 75 0 1 . 1 The eyepiece has a focal length of 22 mm. Determine the distance between the eyepiece and the objective lens. 0 1 . 2 When viewed through the telescope, the image of Jupiter subtends an angle of 1.7 × ...

AQA-7408-3A-PHYSICS QUESTION PAPER 3 SECTION A-A LEVEL-17Jun24-AM. Section A box Answer all questions in this section. 0 1 This question is based on a method to determine the resistivity of a wire (required practical activity 5). Figure 1 shows a micrometer screw gauge 0 1 box . 1 State, in mm, the resolution of the main scale. [1 mark] resolution = mm 0 1 . 2 What is the reading on the micrometer? Tick () one box. [1 mark] 6.22 mm 6.72 mm 6.78 mm 8.22 mm 0 1 . 3 A wire X is...

AQA-7408-2-PHYSICS QUESTION PAPER 2-A LEVEL-6Jun24-AM. Section A box Answer all questions in this section. 0 1 A room contains dry air at a temperature of 20.0 °C and a pressure of 105 kPa. 0 1 . 1 Show that the amount of air in each cubic metre is about 40 mol. [1 mark] 0 1 . 2 The density of the dry air is 1.25 kg m−3 . Calculate crms for the air molecules. Give your answer to an appropriate number of significant figures. [3 marks] crms = m s−1 0 1 . 3 Calculate...

AQA-7408-1-PHYSICS QUESTION PAPER 1-A LEVEL-24May24-AM. Section A box Answer all questions in this section. 0 1 . 1 State the names of the four fundamental interactions. [1 mark] 1 2 3 4 0 1 . 2 State the products of the decay of a free neutron. [1 mark] 0 1 . 3 Explain which of the fundamental interactions is responsible for the decay of the neutron. [2 marks] 0 1 . 4 The forces between two moving electrons cause their paths to change. Explain, using the concept of exchang...

AQA-7407-2-PHYSICS QUESTION PAPER 2-AS LEVEL-22May24-PM. Section A box Answer all questions in this section. 0 1 A hacksaw blade is a thin flexible strip of metal. Figure 1 shows a blade clamped between two blocks above a horizontal bench. A pen is attached to the free end of the blade. The free end of the blade is displaced and released. The blade oscillates in a horizontal plane as shown in Figure 2. Figure 2 The time for each oscillation is T 0 1 box . 1 Table 1 shows repeated me...

AQA-7407-1-PHYSICS QUESTION PAPER 1-AS LEVEL-15May24-AM. 2 *02* IB/M/Jun24/7407/1 Do not write outside the Answer all questions in the spaces provided. box 0 1 An electron neutrino interacts with a chlorine-37 nucleus to produce an argon-37 nucleus and an electron. The interaction is represented by the equation: e 37 37 Cl Ar e 17 18 v +→ + 0 1 . 1 Explain, with reference to appropriate conservation laws, why the electron is emitted in this interaction. [2 marks] 0 1 . 2...