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 25 of 137 · choose a topic above to narrow them down

SA-9702-SU1-0011 markL1 FoundationCalculatorStationary waves

Adjacent nodes of a stationary wave are

0.25

m apart. State the wavelength.

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SA-9702-SU1-0031 markL1 FoundationCalculatorStrings & pipes

State the frequency of the second harmonic of the same string (fundamental

100

Hz).

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SA-9702-SU2-0012 marksL1 FoundationCalculatorDouble slit

Light passes through two slits

0.50

mm apart. Fringes

1.2

mm apart are seen on a screen

1.0

m away. Calculate the wavelength, in nm.

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SA-9702-SU2-0031 markL1 FoundationCalculatorDiffraction & coherence

Two sources are coherent when they have

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SA-9702-SU2-0041 markL1 FoundationCalculatorDiffraction & coherence

For two coherent sources in phase, a bright fringe (maximum) occurs where the path difference is

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SA-9702-SU2-0051 markL1 FoundationCalculatorDiffraction & coherence

Two waves from in-phase sources meet with a path difference of

\tfrac\lambda2

. State their phase difference, in degrees.

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SA-9702-SU3-0012 marksL1 FoundationCalculatorGrating equation

Light of wavelength

600

nm is incident normally on a grating with

500

lines per mm. Calculate the angle of the first-order maximum.

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SA-9702-SU3-0021 markL1 FoundationCalculatorGrating equation

A grating has

300

lines per mm. Calculate the slit spacing, in μm.

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SA-9702-SU3-0051 markL1 FoundationCalculatorOrders & spectra

Compared with a double slit, a diffraction grating produces maxima that are

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SA-9702-TD1-0012 marksL1 FoundationCalculatorIdeal gas internal energy

Calculate the internal energy of

2.0

mol of an ideal monatomic gas at

300

K. (

R=8.31

J mol⁻¹ K⁻¹)

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SA-9702-TD1-0021 markL1 FoundationCalculatorInternal energy

The internal energy of a system is

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SA-9702-TD1-0041 markL1 FoundationCalculatorIdeal gas internal energy

The internal energy of an ideal gas consists only of kinetic energy because

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SA-9702-TD2-0011 markL1 FoundationCalculatorWork done by a gas

A gas at constant pressure

2.0\times10^5

Pa expands from

1.0\times10^{-3}

m³ to

3.0\times10^{-3}

m³. Calculate the work done by the gas.

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SA-9702-TD2-0031 markL1 FoundationCalculatorFirst law

300

J of work is done on a gas, and it loses

120

J of heat to its surroundings. Calculate the increase in its internal energy.

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SA-9702-TD2-0041 markL1 FoundationCalculatorFirst law

In the 9702 form of the first law,

\Delta U=q+W

, the term

W

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SA-9702-TE1-0011 markL1 FoundationCalculatorKelvin scale

Convert

27

°C to kelvin.

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SA-9702-TE1-0021 markL1 FoundationCalculatorKelvin scale

Convert

77

K (the boiling point of nitrogen) to degrees Celsius.

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SA-9702-TE1-0031 markL1 FoundationCalculatorKelvin scale

Water is heated from

20

°C to

70

°C. State the temperature rise in kelvin.

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SA-9702-TE1-0041 markL1 FoundationCalculatorThermal equilibrium

Two objects are in thermal equilibrium when

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SA-9702-TE1-0051 markL1 FoundationCalculatorKelvin scale

The thermodynamic temperature scale is

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