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

What is 3.2 cm in nanometres?

3.2 x 10^-3 nm

3.2x10⁷ nm

3.2 x 10^-9 nm

2 / 10

What multiple of unit does micro (μ) have?

1 x 10^-3

1 x 10^-6

1 x 10 ^-9

3 / 10

This diagram shows the direction of force for four students pushing on a door at different distances from the hinge, d_pivot. Which student is applying the greatest moment?

4 / 10

Select the best definition for terminal velocity.

When the resultant force is zero.

When the resultant force is less than the driving force.

When the resultant force is greater than the driving force.

When the resultant force is equal to the driving force.

5 / 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

6 / 10

Select the effect on V_out when the surrounding temperature decreases for circuit.

V_out increases.

V_out decreases.

V_out remains constant.

7 / 10

A battery of e.m.f. 1.5 V with an internal resistance of 0.5 Ω is connected in series to a 5 Ω resistor. Calculate the current in the circuit.

0.12 A

0.25 A

0.4 A

3.6 A

8 / 10

When investigating Young's modulus, why should you use a long wire?

To help maintain social distancing.

To reduce the absolute uncertainty in your measurements.

To reduce the percentage uncertainty in your measurements.

To reduce random errors.

9 / 10

A blue laser of wavelength 480 nm is incident on a diffraction grating of 3.00x10⁶ lines per metre, how many order maxima (excluding 0 order) can be seen?

10 / 10

Select the correct statement.

A virtual image is formed by the convergence of light towards a point.

A real image is formed by the divergence of light away from a point.

A real image is formed by the convergence of light away from a point.

A virtual image is formed by the divergence of light away from a point.

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 100?

2 / 10

What is 0.0000176700 to 2 significant figures.

0.000017

0.0000177

0.000018

0.0000180

3 / 10

Which is the SI unit for time?

hour

parsec

second

4 / 10

Which unit measures work?

watts

joules

volts

5 / 10

What multiple of unit does kilo (k) have?

1 x 10³

1 x 10⁶

1 x 10 ⁹

6 / 10

What is 100 MW in gigawatts?

10 GW

1 GW

0.1 GW

7 / 10

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

Type of car

Braking distance

Road surface

8 / 10

Calculate the gradient of the graph shown.

0.25

0.4

0.6

1.2

9 / 10

Select the missing word: _______ errors affect precision.

Random

Systematic

10 / 10

A ammeter with an uncertainty of ± 0.1 A displays a decrease in current from 7.2 A to 4.1 A, what is the difference in current?

3.1 ± 0.05 A

3.1 ± 0.1 A

3.1 ± 0.2 A

3.1 ± 0.31 A

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

A 0.3 m long screwdriver is placed under the circular lid of a paint can and a force of 15 N is applied downward at the end of the screwdriver and the lid opens, pivoting at the opposite side to the screwdriver. The lid has a circumference of 48 cm. Calculate the moment about the open side of the lid.

4.5 N

5.6 N

6.8 N

11.7 N

2 / 10

This diagram shows the direction of force for four students pushing on a door at different distances from the hinge, d_pivot. Which student is applying the greatest moment?

3 / 10

A 75 N force is applied to the end of a spanner that is 25 cm long. Calculate the size of the moment?

1.875 Nm

18.75 Nm

187.5 Nm

1875 Nm

4 / 10

Trolley jousting. A Lidl Trolley T_L of mass 21.0 kg, collides on a horizontal frictionless surface with an Aldi Trolley, T_A of mass 22.5 kg. Before the collision T_L was moving at 3.0 ms^-1 and T_A was at rest. They get stuck together, calculate their velocity.

0 ms^-1. T_L and T_A do not move any further.

1.45 ms^-1

2.8 ms^-1

3.0 ms^-1

5 / 10

Select the graph which best fits the motion of a pogo stick being bounced on at regular intervals.

6 / 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.

7 / 10

Burj Khalifa (Arabic: برج خليفة‎) is the tallest building in the world stood at 828 m. A family are stood at a observation deck at 555 m and the super strong toddler throws it's rattle away at a velocity of 21 ms^-1 and an angle of 43°.

Calculate how long the rattle takes to hit the ground. g_Earth = 9.81 ms^-2

9.1 s

12.2 s

14.5 s

18.3 s

8 / 10

A bride excitedly throws a bouquet of flowers behind her back at 12 ms^-1 her wedding at an angle of 45°. They are released from a height of 2.1 m and are caught just off the floor by her best man Sam.

Calculate how far away Sam was stood. g_Earth = 9.81 ms^-2

3 m

10 m

11 m

17 m

9 / 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

10 / 10

David walks 6 km west then 8 km north. Calculate his displacement.

6 km

8 km

10 km

14 km

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 resistivity is the ohm-metre. A correct alternative unit is:

AmV^-1

VmA^-1

VAm^-1

Am^-1V^-1

2 / 10

Select a use for this circuit in fluctuating light conditions. 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 the effect on V_out when the surrounding temperature decreases for circuit.

V_out increases.

V_out decreases.

V_out remains constant.

4 / 10

Calculate the current at A₁ in the circuit shown.

0.13 A

1.37 A

2.05 A

2.93 A

5 / 10

Which of these circuit symbols represents a thermistor?

6 / 10

Which of the following options is the unit for resistivity?

Ωm

Ω²

Ωm²

7 / 10

If the area (A) of a material was to doubled, what would the resistance be?

R/2

R²

8 / 10

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

Ammeter

Voltmeter

Luxmeter

Newton Meter

9 / 10

The current in a circuit depends on the mean drift velocity of the charge carriers. This can be defined by this equation, what is the current if the number of charge carriers doubles?

I/2

I²

10 / 10

Calculate the current in a circuit when the charge is 24 C over 6 seconds.

2 A

4 A

6 A

8 A

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

When undertaking practical work to measure the viscosity of liquid, why should the marker the signifies timer start be approximately halfway down the tube?

To reduce the percentage error.

To reduce the human error.

To allow the ball bearing to reach terminal velocity.

All of the above.

2 / 10

When the temperature increases, what is the effect on fluids' viscosities?

Gases become less viscous, liquids become more viscous.

Gases become more viscous, liquids become less viscous.

Gases and liquids become less viscous.

Gases and liquids become more viscous.

3 / 10

What is the units for Young's modulus in terms of SI units?

kg m^-2

kgm^-1s^-1

kgm^-1s^-2

kgm^-2s^-3

4 / 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.

5 / 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

6 / 10

Select the graph with the correct labels.

7 / 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

8 / 10

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

9 / 10

Two nichrome wires, A and B, have a load of 30 N placed on them each. The original lengths of the wires are 3 m and 2 m. Each wire shows the same extension. Find the ratio of A_k to B_k.

1 : 1

3 : 2

1.5 : 1

Unable to calculate from information given.

10 / 10

A spring extends by 12 cm when a mass of 87 g is attached to it. Calculate the spring constant. g = 9.81 ms^-2

0.01 Nm^-1

0.10 Nm^-1

1.02 Nm^-1

10.24 Nm^-1

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 work function of an unknown metal is 1.2 eV. Light with energy 3 eV is incident on its surface, calculate the wavelength of the light.

6.63x10^-26 m

7.24x10^-14 m

4.14x10^-7 m

4.52x10³³ m

2 / 10

What happens when a ultrasound wavelength meets an interface in the body?

The ultrasound waves are reflected.

The ultrasound waves are transmitted.

Some ultrasound waves are reflected and some are transmitted.

Some ultrasound waves are absorbed by body tissue and the rest are scattered.

3 / 10

Where is the brightest maxima located?

zero order

1st order

2nd order

nth order

4 / 10

The greatest amount of diffraction occurs when _________.

The gap is half the size of the wavelength.

The gap and the wavelength are the same size.

The gap is twice the size of the wavelength.

The gap doesn't affect diffraction.

5 / 10

A focal point for a concave lens is 150 mm away from the lens. An object is then placed 7.5 cm from the lens. Calculate the distance the image is from the lens.

7.89 mm

78.94 mm

18.75 mm

187.5 mm

6 / 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

7 / 10

Which type(s) of images do convex lenses form?

Real only

Virtual only

Both real and virtual

8 / 10

Light travels at 2.25x10⁸ ms^-1 in water, what is the refractive index of water?

0.75

1.33

1.59

9 / 10

What is the wavelength of the fifth harmonic of a stationary wave on a string of length 4m fixed at both ends?

0.67 m

0.8 m

1.25 m

1.6 m

10 / 10

On a stationary wave, where is there maximum vibration.

Nodes

Antinodes

Your score is

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