A. Steel
B. Water at 25°C
C. Air at 0°C
D. Copper
🧠 Explanation:
The speed of sound is minimum in air at 0°C, compared to liquids or solids. For physics students, this highlights acoustics, making it a key topic for studying sound propagation, physics, and environmental science. Temperature affects speed. Understanding this ensures knowledge of physical principles. It’s essential for analyzing physics, acoustics, and engineering. Studying sound speed offers insights into how mediums affect waves, crucial for physics, engineering, and environmental science.