Learn Extracted exam questions A-Level Physics 9702 Physics June 2025 Question Paper 13
9702 Physics June 2025 Question Paper 13
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= 8.99 109 m F–1) Planck constant h = 6.63 10–34 J s Stefan–Boltzmann constant = 5.67 10–8 W m–2 K–4 Formulae uniformly accelerated motion s = ut +
1 at v 2 = u 2 + 2as hydrostatic pressure p = gh upthrust F = gV Doppler effect for sound waves of = s s v v v f electric current I = Anvq resistors in series R = R1 + R2 + ... resistors in parallel R 1 = R + R + ...
What represents a vector quantity?
s later What is a reasonable estimate of the current in an electric kettle that is in use?
The graph shows the variation of velocity with time t of an object moving in a straight line. –1 –2 –3 –4 velocity / m s–1 t / s At t = 0, the displacement of the object is zero. What is the displacement of the object at t = 20 s?
A science museum designs an experiment to show the fall of a feather in a vertical glass vacuum tube. The time of fall from rest in the vacuum is to be close to 0.5 s. Which length of tube is required?
Two coins are projected from a horizontal table at the same initial speed u. Coin X is projected horizontally. Coin Y is projected upwards at an angle of 30° to the horizontal. u u coin X coin Y 30° Both coins hit the horizontal ground without bouncing. Assume the air resistance on each coin is negligible. Which statement about the motion of the coins is correct?
Two spheres are released from rest at equal heights above the ground. Both spheres reach terminal velocity. One sphere has a larger density than the other sphere. Both spheres have equal volumes. Which statement is correct while both spheres are at terminal velocity?
Which statement defines force?
Four forces, all in the same plane, act on an object. 12 N 12 N 20 N 20 N What could describe the motion of the object?
A nucleus collides with a stationary nucleus in a vacuum. The diagrams show the paths of the nuclei before and after the collision. No other particles are involved in the collision. Which diagram is not possible?
A non-uniform bar PQ has length 50 cm and weight 200 N. P Q 50 cm 360 N block non-uniform bar A block of weight 400 N is attached to the top of the bar at its centre. The bar rests on horizontal ground. A vertical force of 360 N is now exerted upwards on the bar at end Q and is just sufficient to lift end Q from the ground. What is the distance from the centre of gravity of the bar to end P?
What is the definition of density?
A block is in equilibrium on a slope. block Which vector triangle represents the three forces acting on the block?
A measuring cylinder contains 80 cm3 of a liquid. The pressure due to the liquid at the 60 cm3 mark is 1200 Pa. What is the pressure due to the liquid at the base of the measuring cylinder?
Four identical uniform blocks are spread on a table. Each block has mass m and thickness h. h h The acceleration of free fall is g. How much work is done on the blocks in stacking them on top of one another?
An electric motor uses 1.7 kW of power when operating normally. The efficiency of the motor is 53%. What is the useful output power of the motor?
A ball is released from rest and falls vertically to the ground. The kinetic energy EK of the ball varies as the height h of the ball above the ground changes. Air resistance is negligible. Which graph shows the variation of EK with h?
An object travelling with a speed of 10 m s–1 has kinetic energy of 1500 J. The speed of the object is increased to 40 m s–1. What is the new kinetic energy of the object?
What are the units of stress, strain and the Young modulus? stress strain Young modulus
The force–extension graph for a metal wire is shown. force extension Which quantity is represented by the area under the graph?
A wire of length L0 is attached at one end to a fixed point. A tensile force is applied to the other end so that the wire extends and has a new length L1. What is the strain of the wire?
A wire of length L is stretched to determine its limit of proportionality. The graph shows the variation of the extension x with the force F applied to the wire. P F x The limit of proportionality is shown by point P on the graph. The experiment is repeated with another wire of length 2L but of the same material and same diameter as the first wire. Which point on the graph shows the limit of proportionality for the new wire? P F x
The graph shows the variation with distance along the wave of the displacement of water particles at a particular instant in time for a transverse water wave. –2 –4 distance / m displacement / m P Q R P, Q and R show the positions of three water particles in the wave. Which particle has the greatest speed at the instant shown?
Which phenomenon is only associated with transverse waves?
A wave is displayed on an oscilloscope. The oscilloscope settings are: time–base: 300 s div–1 y-gain: 40 V div–1. What is the frequency of the wave?
An electromagnetic wave travelling in free space is not visible to the human eye. What is a possible wavelength of the wave?
Electromagnetic waves of equal wavelengths are emitted from two sources, X and Y. The waves are emitted from X and Y with a phase difference of 180°. A detector moves along a path that is parallel to the line XY and detects a pattern of intensity maxima and minima. The diagram shows the arrangement of the sources and the path of the detector. Z X Y 110 cm path of detector 70 cm An intensity maximum is detected at point Z. Length XZ is 70 cm and length YZ is 110 cm. What is a possible wavelength of the waves?
Two waves of the same type overlap. When does the principle of superposition apply?
A ripple tank contains water at a constant depth. A water wave of constant frequency travels towards a gap in a barrier placed in the ripple tank. The gap is made smaller. Which diagram represents the wave before and after the barrier?
Light of a single frequency from two coherent sources interferes to produce a pattern of bright and dark fringes on a screen. Which change results in a larger fringe separation?
The current I in a metallic conductor of cross-sectional area A is given by I = Anve where e is the elementary charge and v is the mean drift velocity of the conduction electrons. What is represented by the letter n in the equation?
What cannot be the charge on a charge carrier?
A steel wire with a length of 2.20 m is connected to a battery as shown.
Two resistors of resistance R and two resistors of resistance 3R are connected to a cell of e.m.f. 8.0 V as shown. The cell has negligible internal resistance. V 8.0 V R 3R 3R R What is the reading on the voltmeter?
A battery has an e.m.f. E and internal resistance r. The battery delivers a current I to a variable resistor and the p.d. across its terminals is V. r E I V The variable resistor is adjusted so that I increases. Why does V decrease?
An electrical device of fixed resistance 20 is connected in series with a variable resistor and a battery of e.m.f. 16 V and negligible internal resistance. 20 device 16 V The power dissipated in the electrical device is 4.0 W. What is the resistance of the variable resistor?
A nucleus decays by emitting a + particle. Which particle must also be emitted from the nucleus?
What are the charges on an antidown quark and on an antistrange quark? antidown quark antistrange quark
The nucleus of a radioactive isotope of an element emits an -particle. The daughter nucleus then emits a – particle and then the daughter nucleus of that reaction emits another – particle. Which statement describes the final nuclide that is formed?