Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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2730 questions · page 67 of 137 · choose a topic above to narrow them down

SA-PX-PI-0031 markL1 FoundationCalculatorExchange particles

The exchange particle of the weak interaction in β⁻ decay is the

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SA-PX-RF-0011 markL1 FoundationCalculatorSnell’s law

Calculate the speed of light in glass of refractive index

1.50

, in units of

10^8

m s⁻¹. (

c=3.00\times10^8

m s⁻¹)

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SA-PX-RF-0031 markL1 FoundationCalculatorCritical angle

Calculate the critical angle, in degrees, for glass of refractive index

1.50

in air.

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SA-PX-RF-0051 markL1 FoundationCalculatorCritical angle

Total internal reflection can happen only when light travels

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SA-PX-RO-0011 markL1 FoundationCalculatorMoment of inertia

Two

2.0

kg masses are fixed

0.50

m from an axis on a light rod. Calculate the moment of inertia in kg m².

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SA-PX-RO-0021 markL1 FoundationCalculatorMoment of inertia

A flywheel with

I=0.50

kg m² spins at

20

rad s⁻¹. Calculate its rotational kinetic energy in J.

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SA-PX-RO-0031 markL1 FoundationCalculatorTorque

A torque of

4.0

N m acts on a wheel with

I=0.50

kg m². Calculate its angular acceleration.

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SA-PX-SG-0011 markL1 FoundationCalculatorSampling

State the number of quantisation levels available with an

8

-bit sample.

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SA-PX-SG-0021 markL1 FoundationCalculatorSampling

A signal contains frequencies up to

20

kHz. Calculate the minimum sampling rate in kHz.

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SA-PX-SG-0051 markL1 FoundationCalculatorLC filters

A filter has resonant frequency

10

kHz and bandwidth

500

Hz. Calculate its Q factor.

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SA-PX-SR-0011 markL1 FoundationCalculatorDilation

Calculate the Lorentz factor

\gamma

for a speed of

0.60c

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SA-PX-SR-0041 markL1 FoundationCalculatorPostulates

The Michelson–Morley experiment found

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SA-PX-ST-0011 markL1 FoundationCalculatorDistances

A star has a parallax angle of

0.25

arcseconds. Calculate its distance in parsecs.

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SA-PX-ST-0021 markL1 FoundationCalculatorDistances

Convert

4.0

pc into metres, in units of

10^{17}

m. (

1

=3.09\times10^{16}

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SA-PX-ST-0031 markL1 FoundationCalculatorHR diagram

On a Hertzsprung–Russell diagram, white dwarfs are found

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SA-PX-ST-0041 markL1 FoundationCalculatorLife cycles

At the end of its life, a star with the mass of the Sun will become a

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SA-PX-TE-0011 markL1 FoundationCalculatorTelescope optics

A refracting telescope has an objective of focal length

1.20

m and an eyepiece of focal length

40

mm. Calculate its angular magnification in normal adjustment.

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SA-PX-TE-0021 markL1 FoundationCalculatorTelescope optics

Calculate the distance in m between the lenses of the same telescope in normal adjustment.

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SA-PX-TE-0041 markL1 FoundationCalculatorResolution

8

m telescope is compared with a

2

m telescope. State how many times greater its collecting power is.

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SA-PX-VI-0012 marksL1 FoundationCalculatorStokes’ law

A sphere of radius

2.0

mm moves at

0.050

m s⁻¹ through oil of viscosity

1.5

Pa s. Calculate the viscous drag in mN.

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