A-LevelPhysicsWavesOct/Nov 2015Paper 1 Q271 Mark

P is a source emitting infra-red radiation and Q is a source emitting ultra-violet radiation. The figures in the table are suggested values for the wavelengths emitted by P and Q. Which row is correct?

Q: What topic does this question test?

This question tests Waves in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Awavelength emitted by P/m: 5 x 10⁻⁵, wavelength emitted by Q/m: 5 x 10⁻⁸

Bwavelength emitted by P/m: 5 x 10⁻⁵, wavelength emitted by Q/m: 5 x 10⁻¹⁰

Cwavelength emitted by P/m: 5 x 10⁻⁷, wavelength emitted by Q/m: 5 x 10⁻⁸

Dwavelength emitted by P/m: 5 x 10⁻⁷, wavelength emitted by Q/m: 5 x 10⁻¹⁰

✓ Correct Answer

The correct answer is A: wavelength emitted by P/m: 5 x 10⁻⁵, wavelength emitted by Q/m: 5 x 10⁻⁸

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

🔒

Unlock the Examiner's Analysis

Join thousands of Cambridge students already using Oracle Prep

About This A-Level Physics Question

Topic

This multiple-choice question tests Waves in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2015 examination, Paper 1 Variant 2.

Practice on Oracle Prep

Oracle Prep provides AI-powered practice for all Cambridge O-Level and A-Level subjects. Our platform includes topic predictions with 87.7% accuracy, AI essay grading, and a comprehensive question bank spanning 25 years of past papers across 29 subjects.