Physics Random Retrieval Y12

Physics Year 12 Random Retrieval

This quiz contains all the questions in the Physics Year 12 section. The website will pick 10 questions at random.

1 / 10

Identify the dependent variable: Investigating the braking distance of different cars.

Type of car

Braking distance

Road surface

2 / 10

Select if the following is a scalar or a vector: speed

Scalar

Vector

3 / 10

The current at A₁ is 4 A and the current at A₂ is 1 A. Select the current at A₃.

1 A

2 A

3 A

4 A

4 / 10

A copper wire of diameter 0.6 mm, X, is joined in series to the end of another copper wire of diameter 0.125 mm, Y. Both wires are 80 cm in length when no load is applied. A 15 N load is hung on the end of the wires as shown in the diagram below. If the Young's Modulus of copper is 128 GPa, calculate the extension for each wire.

ExtensionX = 0.3 mm, ExtensionY = 7.6 mm

ExtensionX = 0.4 mm, ExtensionY = 9.5 mm

ExtensionX = 1.4 mm, ExtensionY = 1.6 mm

ExtensionX = 2.3 mm, ExtensionY = 11.9 mm

5 / 10

A meteor traveling through space has a k = 4.2x10⁶ Nm^-1 and a force of 5x10⁸ N. Calculate the extension of the meteor.

8.4x10^-3 m

8.4 m

11.9 m

119.0 m

6 / 10

In the context of electrons in atoms, what is excitation?

Enough energy is absorbed by an electron causing it to move to a higher energy level.

Enough energy is absorbed by an electron causing it to break free of the atom.

Enough energy is absorbed by an atom causing it to release all its electrons.

Enough energy is absorbed by an atom causing all its electrons to move up an energy level.

7 / 10

BBC Radio Sheffield West Midlands broadcasts on 97.4 MHz. Calculate the wavelength of the radio waves.

0.32 m

3.08 m

33.35 m

318.67 m

8 / 10

A stationary wave at the first harmonic is created on a 40 cm length of string with mass 1.2 kg. The full length of the string is 65 cm and is under tension of 3 N. Calculate the frequency.

0.125 Hz

0.196 Hz

1.25 Hz

1.96 Hz

9 / 10

Two points on a wave have a phase difference of 1080°, are they in phase?

Yes

No - they are out of phase

No - they are exactly out of phase

10 / 10

What is 100.249 to 2 decimal places.

100.00

100.20

100.25

100.30

Your score is

Working as a Physicist Random Retrieval

This quiz contains all the questions in the Working as a Physicist section. The website will pick 10 questions at random.

1 / 10

How many significant figures are in 4.00013?

2 / 10

What is 100.249 to 2 decimal places.

100.00

100.20

100.25

100.30

3 / 10

Which unit measures force?

Newtons

kilograms

pascals

4 / 10

What multiple of unit does femto (f) have?

1 x 10^-15

1 x 10¹²

1 x 10 ¹⁵

5 / 10

What multiple of unit does tera (T) have?

1 x 10⁹

1 x 10¹²

1 x 10 ¹⁵

6 / 10

What is 100 MW in gigawatts?

10 GW

1 GW

0.1 GW

7 / 10

Select the correct definition for the phrase "Independent Variable"

what is changed in an investigation

what is kept the same

what is measured

8 / 10

Identify the dependent variable: Investigating the braking distance of different cars.

Type of car

Braking distance

Road surface

9 / 10

What is a fair test?

A fair test is when only the independent variable has been allowed to affect the dependent variable.

A fair is when you repeat the experiment until you have concurrent results.

A fair test is when results are taken three times and an average is found.

10 / 10

In the equation of a straight line, y = mx + c , select the letter that represents the gradient.

Your score is

Mechanics Random Retrieval

This quiz contains all the questions in the Mechanics section. The website will pick 10 questions at random.

1 / 10

Select the SI unit for Power.

Js^-1

m kg s^-1

m²kg s^-2

m²kg s^-3

2 / 10

Which of the following quantities has the same unit as the rate of change of momentum?

energy

weight

work

acceleration

3 / 10

A man of 75 kg has an upward force applied to him of 735.75 N. Does he lift off the ground?

Can't tell from information given.

Yes

4 / 10

Select the statement that best describes what is happening at point X.

Object is travelling at constant velocity.

Object is stationary.

Object is accelerating constantly.

Object is accelerating.

5 / 10

A bus is slowing down to stop at a bus stop. Select the graph which shows best describes it's motion.

6 / 10

An ill prepared student asks for a pen to write with in class, and the teacher grudgingly lends one out. Instead of walking over to the student, the teacher decides to throw them the pen. The teacher throws the pen at angle of 14° and a speed of 23 ms^-1. Sadly, the teacher misses and the pen continues on it's projected path out the window and takes 5 seconds to hit the car park outside.

Calculate the height different between the point of release and the car park floor. g_Earth = 9.81 ms^-2

95 m

96 m

112 m

123 m

7 / 10

A shotput is launched on sports day by the strongest Y7. She throws it at an angle of 30° at a speed of 18 ms^-1, releasing it at a height of 1.9 m. Calculate how far she throws it. g_Earth = 9.81 ms^-2

1.72 m

2.98 m

18.23 m

31.58 m

8 / 10

A paratrooper jumps from an aircraft. Assuming no air resistance, she accelerates due to gravity for 12 seconds before deploying her parachute. Calculate how far she falls from the aircraft until she deploys her parachute.

27 m

59 m

117 m

706 m

9 / 10

A scuba diver surfaces after a dive. She begins to swim towards the boat at a constant speed of 67 cms^-1 and due to a current in the water this takes her 70 seconds an an angle of 32°. Calculate the time taken if there was no current at the same speed.

40 s

47 s

59 s

67 s

10 / 10

Select if the following is a scalar or a vector: momentum

Scalar

Vector

Your score is

Electric Circuits Random Retrieval

This quiz contains all the questions in the Electric Circuits section. The website will pick 10 questions at random.

1 / 10

The unit of power is the watt. A correct alternative unit is:

VsC^-1

CV^-1S^-1

VCs^-1

VCs

2 / 10

Select a use for this circuit when the temperature fluctuates. Assume V_out is the location of external circuitry

A fan to switch on in warm temperatures.

Street lights to switch on in darkness.

Operate a heater in a reptile house.

A speaker that operates upon sunrise.

3 / 10

Select effect on V_out when the light intensity increases on this circuit.

V_out increases.

V_out decreases.

V_out remains constant.

4 / 10

Calculate the total resistance of the circuit shown.

0.69 Ω

4 Ω

8 Ω

16 Ω

5 / 10

A cell of e.m.f. 3.0 V and internal resistance 0.3 Ω is connected in a series with an ammeter reading 0.25 A and a motorised hula girl who dances when the circuit is complete. Calculate the power supplied by the cell.

0.71 W

0.73 W

0.75 W

0.77 W

6 / 10

What is Ɛ measured in terms of SI base units?

m² kg s^-3 A^-1

m² kg s^-2

J s^-1 A^-1

m^-1 kg s^-2

7 / 10

Laura Kenny can reach 1070 W cycling on her bike. If she was a 12 V battery, what would her current be?

0.01 A

12 A

89 A

1284 A

8 / 10

Which graph best describes Ohm's law?

9 / 10

The unit for potential difference is Voltage, what is this in SI base units?

m² kg s^-3 A^-1

A s

J s^-1 A^-1

10 / 10

Which piece of equipment can be used to measure the current in a circuit?

Ammeter

Voltmeter

Oscilloscope

Newton Meter

Your score is

Materials Random Retrieval

This quiz contains all the questions in the Materials section. The website will pick 10 questions at random.

1 / 10

The ship, Queen Elizabeth 2, was a cruise ship from 1969-2008. She currently resides in Mina Rashid, Dubai as a floating hotel. When fully laden she held 70,327 tonnes and therefore displaces that weight of fluid when afloat. If the the density of seawater is 1024 kgm^-3, calculate the upthrust exerted on the ship when she was afloat fully laden. g = 9.81 NKg^-1

6.7x10⁵ N

6.9x10⁸ N

7.1x10⁸ N

7.1x10¹¹ N

2 / 10

A unknown material under load 75 N incurs an extension of 2.1 mm. The original length of the material was 1.75 m and it has a diameter of 0.45 mm. Which material is it most likely to be?

Acrylic

Gold

Nickel

Tungsten

3 / 10

What is Young's modulus a measure of?

The ductility of a material.

The tensile strength of a material.

The stiffness of a material.

The brittleness of a material.

4 / 10

A material has a stress of 6x10⁸ Nm^-2 and is placed under a 5% strain. Calculate the value for the materials Young's modulus.

1.2x10⁸ Nm^-2

3x10⁹ Nm^-2

1.2x10¹⁰ Nm^-2

3x10¹¹ Nm^-2

5 / 10

Which material on the graph above is the strongest?

6 / 10

Which material on the graph above is the stiffest?

7 / 10

Select the graph with the correct labels.

8 / 10

A wire of 1.2 m extends a 3 mm when a load of 20 N is applied to it. Calculate it's strain.

2.5x10^-3 Nm^-2

2.5x10^-3

0.4 Nm^-2

0.4

9 / 10

A wire has a diameter of 0.5 mm and a breaking stress of the wire is 7.4x10¹⁰ Nm^-2. Calculate the mass that would break the wire. g = 9.81 ms^-2

1.5x10⁴ N

1.5x10⁶ N

3.7x10⁷ N

3.7x10⁸ N

10 / 10

This graph shows the extension of 4 different springs, which spring is the stiffest?

Your score is

Waves & the Nature of Light Random Retrieval

This quiz contains all the questions in the Waves & the Nature of Light section. The website will pick 10 questions at random.

1 / 10

The Young’s double slit experiment is an example of light as a __________.

Wave

Particle

2 / 10

The work functions of four metals are shown above. These metals are irradiated by incident light of 5.2x10¹⁴ Hz, which metals will emit electrons?

All four metals.

Potassium, Sodium and Zinc only.

Potassium only.

None of the metals.

3 / 10

What is meant by the threshold frequency for a metal?

The frequency of light required to cause electrons to eject from any metal at the speed of light.

The frequency of light required to cause electrons to eject from any metal.

The frequency of light required to cause electrons to eject from a specific metal at the speed of light.

The frequency of light required to cause electrons to eject from a specific metal.

4 / 10

In the context of electrons in atoms, what is excitation?

Enough energy is absorbed by an electron causing it to move to a higher energy level.

Enough energy is absorbed by an electron causing it to break free of the atom.

Enough energy is absorbed by an atom causing it to release all its electrons.

Enough energy is absorbed by an atom causing all its electrons to move up an energy level.

5 / 10

Which one of the following types of wave can't be polarised?

gamma

ultraviolet

infrared

ultrasonic

6 / 10

A lens has a focal length of 4.8 cm. Calculate the lens' power.

0.21 D

2 D

4.8 D

8.3 D

7 / 10

An small child's toy is 4 cm from a lens with focal length of 6 cm. How far away from the lens is the image formed?

0.67 cm

1.5 cm

2.4 cm

12 cm

8 / 10

Calculate the critical angle for the boundary when light leaves a medium of refractive index 1.52 and enters air.

0.01°

0.65°

41.1°

65.7°

9 / 10

Soumya plays a note of wavelength 25 cm on her synthesiser. She knows the speed of sound is 340 ms^-1 in air. Calculate the frequency.

13.6 Hz

85 Hz

1360 Hz

8.5 kHz

10 / 10

Select the wave with the highest frequency.

Your score is

Recent Posts

Categories