Sound waves cannot travel through a

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Q: 8 (CDS-I/2018)
Sound waves cannot travel through a

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,58,24,6,6,12,58

keywords: 

{'sound waves': [0, 0, 2, 9], 'wooden hollow pipe': [0, 0, 0, 1], 'silver slab': [0, 0, 0, 1], 'vacuum': [0, 1, 3, 7], 'air': [1, 0, 0, 0], 'copper wire': [0, 0, 0, 3], 'glass prism': [0, 0, 0, 2]}

The question asks about which medium sound waves cannot travel through. Let`s analyze each option to understand why the correct answer is option 4.

Option 1 suggests a copper wire placed in air. Sound waves can travel through solids, liquids, and gases. Copper is a solid, and air is a gas, so sound waves can travel through the copper wire and air without any problem. Therefore, option 1 is incorrect.

Option 2 mentions a silver slab placed in air. Similar to the previous explanation, sound waves can travel through solids and gases. Since both silver and air are solids, sound waves can travel through them. Therefore, option 2 is incorrect.

Option 3 discusses a glass prism placed in water. Sound waves can travel through solids, liquids, and gases. Both glass (solid) and water (liquid) allow sound waves to propagate. Therefore, option 3 is incorrect.

Option 4 presents a wooden hollow pipe placed in a vacuum. Sound waves require a medium to propagate, and a vacuum is an absence of any medium. As a result, sound waves cannot travel through a vacuum. Therefore, the correct answer is option 4.

In conclusion, sound waves cannot travel through a wooden hollow pipe placed in a vacuum because a vacuum lacks a medium