No questions found
Which measuring devices are most suitable to determine the volume of about 200 ml of liquid and the diameter of a thin wire?
546
540
522
The diagrams show speed-time graphs for four different bodies moving for 6.0 s.
Which body travelled the least distance?
584
525
533
Which statement describes the relationship between mass and weight?
564
515
505
The diagram shows four pieces of laboratory apparatus.
Which pieces of apparatus are used to find the density of a liquid?
530
511
547
The diagram shows a metre rule MN on two supports, P and Q. Two loads are placed on the rule, as shown. The rule rests steadily on the supports. Which row is correct?
554
599
567
The diagram shows an object moving at a constant speed in a circular path in the direction shown. A force acts on the object to keep it in the circular path. In which labelled direction does this force act, when the object is in the position shown?
535
580
562
A trolley of mass 4.0 kg travelling with a velocity of 4.0 m/s collides with a trolley of mass 2.0 kg travelling with a velocity of 2.0 m/s in the same direction. After the collision, the velocity of the 4.0 kg trolley is reduced to 3.0 m/s.
[Image_1: Diagram showing trolleys before and after collision]
What is the velocity \( v \) of the 2.0 kg trolley after the collision?
563
535
550
An object falls towards the Earth’s surface.
What happens to the gravitational potential energy and to the kinetic energy of the object?
[Table_1]
594
501
534
A boy takes 0.60 s to lift a book of mass 0.60 kg from the top of a desk and place it on a shelf. The top of the desk is 0.80 m above the floor, and the shelf is 1.7 m above the floor. The gravitational field strength is 10 N/kg. Which power does the boy develop?
569
559
533
A mass is lifted from rest on the ground to Y. There is no air resistance.
P is the increase in gravitational energy of the mass.
Q is the kinetic energy of the mass at Y.
Which expression is equal to the mechanical work done on the mass?
563
500
573
The diagram shows a tank containing sea water. The density of the sea water is 1020 kg/m³. What is the pressure at point P relative to atmospheric pressure?
590
540
516
The pressure of a fixed mass of gas in a cylinder is measured. The volume of the gas in the cylinder is slowly decreased. The temperature of the gas does not change.
Which graph shows how the pressure of the gas changes during this process?
566
511
504
Wet clothes are hanging outside to dry.
What are the best conditions for the clothes to dry most quickly?
[Table with wind speed and temperature]
508
523
522
Which change in the design of a liquid-in-glass thermometer makes it more sensitive?
583
536
521
A scientist is determining the specific latent heat of vaporisation of a liquid.
He puts the liquid in a vacuum flask and heats it with a 100 W heater. The mass of liquid in the vacuum flask when it starts to boil is 300 g. He continues to heat the liquid for a further 12 minutes after which the mass of the remaining liquid is 100 g.
What is the specific latent heat of vaporisation of the liquid?
(Assume that all the thermal energy from the heater is used to vaporise the liquid.)
573
576
573
Which piece of equipment is designed to produce a type of electromagnetic wave?
525
524
569
A sound wave travels from air into water. Which row describes what happens to the frequency and the wavelength of the wave?
[Table_1]
598
566
541
The diagram shows plane water waves in a ripple tank passing through a gap between two barriers and spreading out.
Which name is given to this effect?
556
516
597
A ray of light travels from air into a material, as shown.
What is the refractive index of the material?
554
556
524
The diagram shows an object in front of a plane mirror.
At which labelled position is the image of the object formed?
522
581
508
The angle between an incident ray and the surface of a plane mirror reflecting the ray is 70°.
What is the angle of incidence?
545
599
554
The diagram shows the air molecules in part of a sound wave at a particular moment in time.
Which statement is not correct?
529
557
530
An object is reflected in a plane mirror.
Which description of the image is correct?
519
578
592
A 100 m race is started by firing a gun. The gun makes a bang and a puff of smoke at the same time.
When does the finishing judge see the smoke and when does he hear the bang?
561
516
529
Two magnets X and Y are placed end to end on a bench. The diagram shows the magnetic field pattern between the poles of the magnets.
Which row shows the direction of the forces exerted on X and Y by the magnetic field?
[Table_1]
554
557
556
The diagram shows a circuit used to control the potential difference (p.d.) across a lamp.
The variable resistor is adjusted until the p.d. across the lamp is 6.0 V.
The current in the lamp is 0.5 A.
What is the resistance of the lamp?
533
514
519
A charge $Q$ flows for time $t$ through a resistor of resistance $R$.
Which equation gives the current $I$ in the resistor?
574
533
501
A plastic rod is rubbed with a dry woollen cloth. The rod becomes positively charged. Which statement is correct?
600
556
568
Which diagram shows a graph of current against voltage for a filament lamp?
507
536
535
Each potential divider is placed in a circuit with a power supply.
Which potential divider makes the potential difference (p.d.) across component Y increase when the light intensity increases?
580
541
558
Diagram 1 is a circuit diagram showing an a.c. power supply connected to four diodes and a resistor.
Diagram 2 shows the output voltage from the power supply.
[Image_1 showing diagrams]
Which graph correctly shows the voltage–time curve across resistor R?
561
580
593
Which diagram shows the circuit symbol for a fuse?
525
577
527
The diagram represents an alarm system using a logic gate.
The data for the system is shown.
[Table_1]
The siren sounds when there is any indication of a fire.
Which logic gate is used?
530
576
567
Four small compasses are placed around a solenoid. A current is now switched on in the solenoid. Which diagram shows possible new directions of the compass needles?
536
508
523
Transformers are used in the transmission of electrical power to houses.
Which type of transformer is used at the power station prior to connection to the power lines and which type is used prior to delivery to the houses?
[Table_1]
545
529
584
The diagram shows an a.c. generator rotating in a clockwise direction.
What are the names of parts 1 and 2?
592
575
538
A thin metal foil is placed in a vacuum. \( \alpha \)-particles are fired at the foil and most go straight through. A very small proportion of the \( \alpha \)-particles are deflected through large angles. What does this provide evidence for?
516
540
518
Thorium-230 is represented by the symbol $^{230}_{90} \text{Th}$. This isotope is radioactive and decays to radium by emitting $\alpha$-particles.
Which nuclide is produced by this decay?
500
527
556
The diagram shows a piece of apparatus used to determine the nature of the emissions from a radioactive source. The absorbers can be raised out of or lowered into the path of the radiation from the source to the detector. The apparatus is evacuated.
The table gives a set of results for a particular radioactive source.
[Table_1]
Which types of radiation are being emitted by the radioactive source?
582
500
557
The graph shows the measured count rate of radiation from a source containing a radioactive isotope. The detector is in a laboratory, with no shielding from background radiation.
What is the measured count rate after a time of one half-life?
501
563
594
