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A-LevelPhysicsWaves9702/12 · Feb/Mar 2022 · Q261 Mark

Water waves of wavelength λ are formed in a ripple tank. The waves are diffracted as they pass through a narrow gap of width d (d is greater than λ). Which gap width and which wavelength will cause the largest decrease in the amount of diffraction? gap width wavelength A ¹/₂d ¹/₂λ B ¹/₂d 2λ C 2d ¹/₂λ D 2d 2λ

A¹/₂d, ¹/₂λ

B¹/₂d, 2λ

C2d, ¹/₂λ

D2d, 2λ

✓ Correct answer

C: 2d, ¹/₂λ

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About this question

Topic: Waves, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Feb/Mar 2022 Paper 1 Variant 2, question 26.

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