9702/12/F/M/24 , 9702_m24_qp_12 , 2024 Feb Mar MCQ As Level Physics Full solution

00:00 Introduction
00:12 1.Which row shows a physical quantity and its base unit in the SI system?
0:36 2.A car of mass 850kg is travelling in a horizontal straight line. The diagram shows the two horizontal forces acting on the car in opposite directions.
1:43 3 An object of mass m is suspended by a spring from a fixed point.
4:03 4 An object of fixed mass is initially at rest at point P. The object then moves away from point P with uniform acceleration.
5:02 5 A projectile is launched at an angle of 25 to the horizontal with a horizontal component of velocity of 13 m s–1. What is the vertical component of the velocity of the projectile when it is launched?
6:11 6 A ball is released from rest at position X at time zero. At 1.0 s, it bounces inelastically from a horizontal surface and rebounds, reaching the top of its first bounce at 1.5 s.
7:43 7 What is the definition of acceleration?
8:18 8 Two balls P and Q, of equal mass, move along a straight line directly towards each other as shown.
9:15 9 A basketball player hits a ball vertically downwards with a speed of 2.4ms–1 from a height of 0.90 m.
10:27 10 A ball falls through a liquid at a constant speed. It is acted upon by three forces: an upthrust, a drag force and its weight. The liquid has a uniform density. Which statement is correct?
12:11 11 Some small solid cubes each have mass 1.0kg and sides of length 5.0cm. These small cubes are stacked together to form a large solid cube with sides of length 2.0 m.
13:54 12 A borehole of depth 2000m contains both oil and water, as shown. The pressure due to the liquids at the bottom of the borehole is 17.5MPa. The density of the oil is 830kgm–3 and the density of the water is 1000 kg m–3.
18:30 13 A rod is pivoted at one end. Initially the angle  of the rod to the horizontal is 0.
The weight of the rod causes a moment M about the pivot.
20:46 14 A hinged trapdoor is held closed in the horizontal position by a cable.
Three forces act on the trapdoor: the weight W of the door, the tension T in the cable and the force H at the hinge.
21:48 15 What is the definition of force?
22:19 16 A boat moves at a constant velocity v through still water. A constant drag force F acts on the boat.
22:31 17 The diagram shows four forces acting on a circular disc.
23:56 18 A ball is projected into the air from horizontal ground and follows the path shown in the diagram.
25:21 19 The battery of a small tablet computer is initially uncharged. It is connected to a constant 10W power supply for 2.0 hours to charge the battery.
26:39 20 An initially stationary firework explodes and splits into two fragments that move horizontally in opposite directions.
29:42 21 A spring is fixed at one end and extended by applying force F to the other end. The spring has extension x and elastic potential energy EP. The spring constant is k.
31:03 22 A force–extension graph is produced for a metal wire. What must describe the limit of proportionality of the wire?
31:24 23 A spring has a spring constant of 6.0 N cm–1. It is joined to another spring whose spring constant is 4.0 N cm–1.
33:15 24 The range of frequencies of sound waves emitted by blue whales is 10 Hz to 40 Hz. The speed of sound in seawater is approximately 1.5 km s–1.
33:49 25 A sound wave is detected by a microphone and displayed on the screen of a cathode-ray oscilloscope (CRO).
35:04 26 A source of sound waves with constant frequency moves towards a stationary observer.
35:41 27 Which type of waves cannot be polarised?
36:04 28 A beam of light with power P has an area of cross-section A.
The amplitude of the light waves in the beam is X.
38:20 29 Two loudspeakers are connected to the same signal generator. The signal generator produces a single frequency.
40:11 30 Two wave sources emit coherent waves.
40:36 31 A student sets up an experiment to investigate double-slit interference.
The student uses light of a single wavelength from
41:32 32 What are the definitions of potential difference (p.d.) and electromotive force (e.m.f.), in terms of energy transfer W and charge q?
42:12 33 The diagram shows a network consisting of three resistors.
43:06 34 A resistor dissipates 25 W of power when there is a potential difference (p.d.) of 4.0 V across it.
43:25 35 The diagram shows a cell with internal resistance connected in parallel with a fixed resistor and a variable resistor.
44:29 36 A radioactive source produces a beam of -particles in a vacuum. The average current caused by the -particles in the beam is 1.5  10–9 A
45:54 37 The charge carriers in a metal wire are free electrons.
Which statement about the charge of each free electron is correct?
47:07 38 Which flavours of quark have charge + 32 e?
47:27 39 An unstable nucleus of an element decays by emitting an -particle or a – particle to become a nucleus of a different element.
49:34 40 A nucleus of carbon-10, 106C, decays by beta-emission to form a nucleus of boron-10, 105B.
50:43 END