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Importance of Acoustics MCQ (Multiple Choice Questions) PDF Download
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Importance of Acoustics MCQs: Questions and Answers PDF Download
The technique or method to absorb undesirable sounds by soft and porous surface is called
- acoustic protection
- unacoustic protection
- audible protection
- decibel protection
When sound interacts with materials and boundaries, it displays all the properties of
- heat
- waves
- light
- electricity
Both bats and dolphins can “see” using
- electric waves
- light waves
- heat waves
- sound waves
Soft materials absorb a large amount of
- heat energy
- light energy
- electromagnetic waves
- sound energy
The echo of sound is more prominent if the surface is
- soft
- rigid
- porous
- smooth
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Grade 9 Physics Career Tests
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Grade 9 Physics MCQ Questions
- Energy present in a body due to its height is called
- If a body covers equal distances in equal intervals of time however short interval maybe, then it has
- Wires on electric poles are given some sag to prevent breaking in
- Stone, metal spoon, pencil are examples of
- Up thrust of water acting on a wooden cube of sides 10cm immersed completely in water is
Importance of Acoustics MCQs Book Questions
- Amount of work done in bringing unit positive charge from infinity to a point in electric field is called
- If we apply law of conversion of energy to electromagnetic induction, electrical energy induced in a conductor comes from
- A transformer is needed to convert 200 V into a 10 V supply. If there are 1000 turns on primary coil, then number of turns on secondary coil is
- Capacitor plates are separated by an insulator known as
- Capacitors which use chemical reactions to store charge are called