Physics
Grade-8
Easy
Question
When a sound producing object moves at a speed greater than that of sound in a medium, it produces _____.
- Sound waves
- Thunder
- Shock waves
- Light waves
Hint:
When a sound-producing object moves at a speed greater than that of sound in a medium, it produces shock waves.
The correct answer is: Shock waves
- A shock wave moves faster than the speed of sound.
- It creates strong pressure in any kind of medium like solid or liquid.
- If an object moves at a greater speed than the sound wave, it produces shock waves.
Related Questions to study
Physics
An object is said to be moving at a supersonic speed when its speed is ____ the speed of sound in a medium.
An object is said to be moving at a supersonic speed when its speed is ____ the speed of sound in a medium.
PhysicsGrade-8
Physics
Which of the following does the speed of sound in a medium not depend on?
Which of the following does the speed of sound in a medium not depend on?
PhysicsGrade-8
Physics
As the temperature of a medium increases, the speed of sound in it ___.
As the temperature of a medium increases, the speed of sound in it ___.
PhysicsGrade-8
Physics
Speed of light ____ speed of sound.
Speed of light ____ speed of sound.
PhysicsGrade-8
Physics
1 kHz = ____Hz.
1 kHz = ____Hz.
PhysicsGrade-8
Physics
The SI unit of speed of sound is ____.
The SI unit of speed of sound is ____.
PhysicsGrade-8
Physics
The audible frequency range of an average human ear is ____.
- Sound which has frequency less than 20Hz is called infrasound.
- Sound which has frequency more than 20KHz is called Ultrasound.
The audible frequency range of an average human ear is ____.
PhysicsGrade-8
- Sound which has frequency less than 20Hz is called infrasound.
- Sound which has frequency more than 20KHz is called Ultrasound.
Physics
The formula for calculating the speed of a sound wave is v = ____.
The formula for calculating the speed of a sound wave is v = ____.
PhysicsGrade-8
Physics
The distance covered by a sound wave in a unit time is called ____.
The distance covered by a sound wave in a unit time is called ____.
PhysicsGrade-8
Physics
The loudness of a sound decreases as we move away from a source of the sound. This is because _____.
The loudness of a sound decreases as we move away from a source of the sound. This is because _____.
PhysicsGrade-8
Physics
The loudness of sound I is ____ to the loudness of sound II.
The loudness of sound I is ____ to the loudness of sound II.
PhysicsGrade-8
Physics