Question

4
Jenis bahan manakah pemantul bunyi yang terbaik?
Which type of material is the best sound reflector?
A
Kaca
Glass
B
Kayu
Wood
C С
Konkrit
Concrete
D
Asbestos
Asbestos​

Answer 1

Answer:

Explanation:Glass

Answer 2

Answer:

Which type of material is the best sound reflector? Glass

Any smooth and hard surfaces like walls, rocks, pillars, wood, metal sheets, and glass will reflect sound waves and are known as good reflectors of sound.

Unlike entirely smooth surfaces, certain materials absorb sound waves instead of reflecting them and are called bad reflectors of sound.

For example, acoustically reflective materials, like drywall, marble floors, and glass, can create a “lively” acoustical environment where sounds continue to reflect around the space; this acoustical liveliness is the “reverberation” of a space.

Explanation:

Generally speaking, porous or soft surface materials such as textiles contribute to sound absorption. Hard surfaces like glass or concrete reflect sound and thus create echoes.

Hard surfaces such as masonry or concrete are considered to be reflective. This means most of the noise is reflected back towards the noise source and beyond.

There are two types of soundproof glass: the double-glazing type that combines soundproofing and insulating properties, and the laminated glass type that combines soundproofing and security performance.

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