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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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12 questions

SA-PX-ST-0011 markL1 FoundationCalculatorDistances
A star has a parallax angle of 0.250.25 arcseconds. Calculate its distance in parsecs.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-0021 markL1 FoundationCalculatorDistances
Convert 4.04.0 pc into metres, in units of 101710^{17} m. (11 pc =3.09×1016=3.09\times10^{16} m)

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-0031 markL1 FoundationCalculatorHR diagram
On a Hertzsprung–Russell diagram, white dwarfs are found
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Salam Academy Original Practice · Proposed mark scheme
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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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-0081 markL1 FoundationCalculatorLife cycles
A main-sequence star is one that is
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-X011 markL1 FoundationCalculatorDistances
A star has a parallax of 0.100.10 arcseconds. Calculate its distance in parsecs.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-X021 markL1 FoundationCalculatorDistances
Convert 1010 pc to light years. (11 pc =3.26=3.26 ly)

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-X041 markL1 FoundationCalculatorLife cycles
A star of more than about 88 solar masses ends its life as
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-0052 marksL2 StandardCalculatorDistances
A star has apparent magnitude 6.06.0 and is 100100 pc away. Calculate its absolute magnitude.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-0061 markL2 StandardCalculatorHR diagram
A red giant is cooler than the Sun yet much more luminous. This is because it
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-X031 markL2 StandardCalculatorDistances
A star at exactly 1010 pc has apparent magnitude 88. State its absolute magnitude.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-ST-0072 marksL3 ExamCalculatorDistances
A star has apparent magnitude 1111 and absolute magnitude 11. Calculate its distance in parsecs.

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Salam Academy Original Practice · Proposed mark scheme