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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-EY-0011 markL1 FoundationCalculatorLens power
Calculate the power in dioptres of a converging lens with focal length 2525 cm.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-0041 markL1 FoundationCalculatorLens power
Two thin lenses of power +2.0+2.0 D and −0.5-0.5 D are placed in contact. Calculate the combined power.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-0051 markL1 FoundationCalculatorLens power
Colour vision is provided by the
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-0061 markL1 FoundationCalculatorDefects
Astigmatism is corrected using
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-0081 markL1 FoundationCalculatorDefects
A short-sighted (myopic) eye is corrected with a
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-X011 markL1 FoundationCalculatorLens power
Calculate the power in dioptres of a diverging lens of focal length 5050 cm.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-X041 markL1 FoundationCalculatorLens power
Rods in the retina are mainly used for
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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-0022 marksL2 StandardCalculatorDefects
A short-sighted person has a far point of 2.02.0 m. Calculate the power of the lens needed to see distant objects clearly.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-X022 marksL2 StandardCalculatorDefects
A myopic person has a far point of 0.800.80 m. Calculate the power of the lens needed.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-X032 marksL2 StandardCalculatorDefects
A long-sighted person has a near point of 0.500.50 m. Calculate the lens power needed to read at 0.250.25 m.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-0032 marksL3 ExamCalculatorDefects
A long-sighted person has a near point of 1.01.0 m. Calculate the power of lens that lets them read a book at 0.250.25 m.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EY-0072 marksL3 ExamCalculatorLens power
An object 0.300.30 m from a converging lens of focal length 0.200.20 m forms a real image. Calculate the image distance in m.

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Salam Academy Original Practice · Proposed mark scheme