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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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12 questions

SA-PX-SR-0011 markL1 FoundationCalculatorDilation
Calculate the Lorentz factor γ\gamma for a speed of 0.60c0.60c.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-0041 markL1 FoundationCalculatorPostulates
The Michelson–Morley experiment found
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-0061 markL1 FoundationCalculatorPostulates
Proper time is the time interval measured by
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-0081 markL1 FoundationCalculatorPostulates
One of Einstein's postulates is that
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-X011 markL1 FoundationCalculatorDilation
Calculate γ\gamma for a speed of 0.80c0.80c.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-X031 markL1 FoundationCalculatorDilation
A rod of proper length 5050 m moves at 0.60c0.60c along its length. Calculate its measured length in m.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-0022 marksL2 StandardCalculatorDilation
Muons have a proper mean lifetime of 2.22.2 μs. Calculate the mean lifetime, in μs, measured on Earth for muons moving at 0.80c0.80c.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-0031 markL2 StandardCalculatorDilation
A spaceship of proper length 100100 m passes Earth at 0.80c0.80c. Calculate its length as measured from Earth, in m.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-0052 marksL2 StandardCalculatorMass–energy
An electron (rest energy 0.5110.511 MeV) moves at 0.60c0.60c. Calculate its total energy in MeV.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-X022 marksL2 StandardCalculatorDilation
An astronaut's clock records a 1010-year journey at 0.60c0.60c. Calculate the journey time measured from Earth, in years.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-0073 marksL3 ExamCalculatorDilation
Muons move at 0.995c0.995c with proper lifetime 2.22.2 μs. Calculate the mean distance, in km, they travel in Earth's frame. (c=3.00×108c=3.00\times10^8 m s⁻¹)

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-SR-X042 marksL3 ExamCalculatorMass–energy
Calculate the kinetic energy, in MeV, of an electron (rest energy 0.5110.511 MeV) moving at 0.80c0.80c.

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Salam Academy Original Practice · Proposed mark scheme