No questions found
A length of cotton is measured between two points on a ruler.
When the length of cotton is wound closely around a pen, it goes round six times.
What is the distance once round the pen?
573
522
540
A ball is dropped in an evacuated tube. A series of photographs is taken at equal time intervals from the time of release. Another ball of the same size but twice the mass is also dropped in the same evacuated tube and photographed.
Which diagram shows the motion of the heavier ball?
503
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599
A car takes 15 minutes to travel along a road that is 20 km long.
What is the average speed of the car?
564
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565
Which statement about the mass and the weight of an object is correct?
553
560
531
Two objects P and Q are placed in a beaker containing a liquid.
Object P floats in the liquid and object Q sinks.
Which row for the densities of object P, object Q and the liquid is possible?
[Table_1]
591
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527
The diagram shows some liquid in a measuring cylinder.
The mass of the liquid is 16g.
What is the density of the liquid?
587
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531
A spacecraft is travelling in space with no resultant force and no resultant moment acting on it. Which statement about the spacecraft is correct?
592
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A man holds a short ladder in four different positions. The weight of the ladder causes a moment about the man's shoulder. In which position is the moment greatest?
505
557
505
A hole is drilled in a square tile. The diagram shows the tile hanging freely on a nail. Where is the centre of mass of the tile?
520
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586
A student does work by pulling a box across a horizontal floor.
She now pulls a second box along the same floor.
Which row indicates that the student is now doing twice as much work?
[Table_1]
502
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544
Air is trapped in a closed tube by a thread of mercury. The mercury thread is 100 mm long. The tube is held as shown.
Atmospheric pressure is 770 mm Hg.
What is the pressure of the trapped air?
550
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510
Brownian motion is the random motion of particles due to molecular bombardment.
In which states of matter is Brownian motion observed?
507
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The diagram shows the relative number of molecules in a liquid that have a given kinetic energy. The graph is divided into sections so that each section contains the same number of molecules. From which section does the greatest number of molecules escape from the liquid per unit time?
589
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531
An electric kettle heats some water. The same kettle then heats a different liquid. The temperature of the liquid rises more rapidly than the temperature of the water. What is a possible explanation of this difference?
535
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595
A wooden wheel can be strengthened by putting a tight circle of iron around it. Which action would make it easier to fit the circle over the wood?
550
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512
A student wishes to calibrate a mercury-in-glass thermometer with a °C scale. Which values should she use for the lower fixed point and for the upper fixed point? [Table_1]
561
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574
Four thermometers, with their bulbs painted different colours, are placed at equal distances from a radiant heater.
Which thermometer shows the slowest temperature rise when the heater is first switched on?
537
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524
A tank contains water. Ripples are produced on the surface of the water.
What causes the ripples to refract?
592
524
551
The diagrams show a wave on the surface of the water in a tank at times 1.0 s apart. The wave is produced at P and travels to the right.
Which row gives the frequency and the speed of this water wave?
[Table_1]
569
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562
Light passes from glass into air. Which diagram shows a ray of light incident at the critical angle on the air-glass boundary?
600
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562
Scout P signals to scout Q on the other side of a valley by using a mirror to reflect the Sun's light.
Which mirror position allows the Sun’s light to be reflected to scout Q?
587
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562
The table describes white light that passes through a prism and forms a spectrum.
Which row is correct?
[Table_1]
584
513
520
Where do all types of electromagnetic waves travel at the same speed?
548
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561
A siren is emitting a sound. As time passes, the sound becomes louder and higher pitched. What is happening to the amplitude and to the frequency of the emitted sound wave? [Table_1]
568
505
600
A permanent magnet is placed close to a bar of soft iron.
What are the polarities of end P and of end Q?
561
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572
The diagrams show three ammeters:
Which ammeters show the same value of current?
557
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577
A student measures the potential difference across a device and the current in the device.
Which calculation gives the resistance of the device?
540
516
516
A lamp is connected across one cell, then across two cells. The potential difference (p.d.) across the lamp and the current in it are measured in each case.
The results are shown.
[Table_1]
What is the change in the resistance of the lamp when the number of cells is increased from one to two?
530
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555
An electrical heater transfers thermal energy to the surroundings. The graph shows how the amount of thermal energy transferred varies with time. The heater continues to transfer energy at the same rate. How much thermal energy is transferred by the heater in 5.0 minutes?
547
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508
Which electrical component does the symbol represent?
501
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539
A student sets up this circuit.
What is the purpose of the circuit?
523
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558
The diagram shows two voltmeters P and Q connected to a potential divider.
The sliding connection at point X is moved towards the top of the diagram.
What happens to the reading on P and to the reading on Q?
581
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514
A simple electric generator induces an electromotive force (e.m.f.).
Which modification would increase the induced e.m.f?
598
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500
A transformer has $N_p$ turns in the primary coil and $N_s$ turns in the secondary coil.
Which row gives the values of $N_p$ and $N_s$ for a transformer that steps up a voltage of 1200 V to 36000 V?
[Table_1]
519
528
568
A straight wire is perpendicular to the paper. It carries a current into the paper. What is the magnetic field pattern and its direction near the wire?
518
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551
In the atomic model, an atom consists of a central mass, orbited by much smaller particles.
What is the name of the central mass and of the orbiting particles?
516
568
553
The table shows the composition of three different nuclei.
[Table_1]
Which nuclei are isotopes of the same element?
508
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600
The table compares the penetrating abilities and ionising effects of $\alpha$-radiation and of $\gamma$-radiation.
Which row is correct?
[Table_1]
592
549
535
Radioactive materials must be handled in a safe way. What is not a safety procedure?
540
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522
