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Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the Lists
List I | List II
I. High speed | (A) Mach
II. Wavelength | (B) Angstrom
III. Pressure | (C) Pascal
IV. Energy | (D) Joule
Explanation
The matching given in the question pairs the four quantities with their conventional units as: High speed → Mach (a dimensionless number expressing speed relative to the speed of sound), Wavelength → Angstrom (commonly used for atomic-scale wavelengths), Pressure → Pascal (SI unit equal to N·m⁻²), and Energy → Joule (SI unit of energy). These exact pairs appear in the provided List I–List II mapping, which directly lists I. High speed: A) Mach; II. Wavelength: B) Angstrom; III. Pressure: C) Pascal; IV. Energy: D) Joule, yielding I–A, II–B, III–C, IV–D as the correct code.
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