Correct Answer: Correct answer is: (C) Steel.
Exam Relevance: Kotak Mahindra Bank Examination, UPSC, SSC, Banking Exams
Difficulty: Moderate
Concept notes: Sound travels fastest in solids, followed by liquids, and then gases. Among the given options, steel is a solid and thus allows sound to travel faster than in hydrogen (a gas), water (a liquid), or vacuum (where sound cannot travel at all).
Common Mistakes: Students may mistakenly think that sound travels fastest in gases or liquids, not realizing that the density and elasticity of solids like steel allow for faster sound propagation.
Explanations: Sound waves require a medium to travel through. In solids like steel, the particles are closely packed and can transmit vibrations more efficiently than in liquids or gases. Therefore, sound travels fastest in steel compared to hydrogen, water, or vacuum.
Option Analysis: - Option A: Hydrogen is a gas, and sound travels slower in gases than in solids.
- Option B: Sound cannot travel in a vacuum as there are no particles to transmit the vibrations.
- Option C: Steel is a solid, and sound travels fastest in solids due to the close packing of particles.
- Option D: Water is a liquid, and sound travels faster in liquids than in gases but slower than in solids.
Mnemonic: SOLID STEEL, SOUND'S SPEEDY PATH
In formative information in your material