Physics
Grade-8
Easy

Question

Sound cannot travel through _________.

  1. Air
  2. Water
  3. Solid
  4. Vacuum

hintHint:

Sound is a mechanical wave.

The correct answer is: Vacuum


    • Sound waves are mechanical waves.
    • They need a material medium for propagation.
    • Like - solid, liquid and gases.
    • It cannot travel through vacuum due to the absence of particle matter.
    • So, the correct option is d.

    Related Questions to study

    Grade-8
    Physics

    Echo is _________ of the sound.

    • Refraction is the bending of sound waves when they enter from one medium to another medium.

    Echo is _________ of the sound.

    PhysicsGrade-8

    • Refraction is the bending of sound waves when they enter from one medium to another medium.

    Grade-8
    Physics

    The reflection of sound in a closed surface is called _______.

    • Amplification refers to the increase of the amplitude or loudness of sound.
    • The repetition of a sound that is caused by the reflection of sound wave in large spaces is called an echo.

    The reflection of sound in a closed surface is called _______.

    PhysicsGrade-8

    • Amplification refers to the increase of the amplitude or loudness of sound.
    • The repetition of a sound that is caused by the reflection of sound wave in large spaces is called an echo.

    Grade-8
    Physics

    Which of the below is used to amplify sound?

    Which of the below is used to amplify sound?

    PhysicsGrade-8
    parallel
    Grade-8
    Physics

    Units to measure sound:

    • The unit of power is watt.
    • The unit of force is newton.
    • The unit of work is Joule.

    Units to measure sound:

    PhysicsGrade-8

    • The unit of power is watt.
    • The unit of force is newton.
    • The unit of work is Joule.

    Grade-8
    Physics

    SONAR is used in _______

    SONAR is used in _______

    PhysicsGrade-8
    Grade-8
    Physics

    A sonar can detect the enemy ship using
    _________ .

    A sonar can detect the enemy ship using
    _________ .

    PhysicsGrade-8
    parallel
    Grade-8
    Physics

    Distance can be measured in___________.

    • The SI unit of time is Second.
    • The SI unit of pressure is Pascal.
    • The SI unit of force is Newton.

    Distance can be measured in___________.

    PhysicsGrade-8

    • The SI unit of time is Second.
    • The SI unit of pressure is Pascal.
    • The SI unit of force is Newton.

    Grade-8
    Physics

    Music is heard from a vehicle's horn.

    Music is heard from a vehicle's horn.

    PhysicsGrade-8
    Grade-8
    Physics

    The SI unit of measurement of velocity is kg/s.

    The SI unit of measurement of velocity is kg/s.

    PhysicsGrade-8
    parallel
    Grade-8
    Physics

    A guitar can produce __________.

    A guitar can produce __________.

    PhysicsGrade-8
    Grade-8
    Physics

    Sound from a speaker undergoes an echo to reach the source back from a mountain located at a distance of 340 m from the source. The total time taken by the sound to cover this distance is 2 s. The speed of sound is ___ m/s.

    After echo, the total distance travelled = 2d

    Sound from a speaker undergoes an echo to reach the source back from a mountain located at a distance of 340 m from the source. The total time taken by the sound to cover this distance is 2 s. The speed of sound is ___ m/s.

    PhysicsGrade-8

    After echo, the total distance travelled = 2d

    Grade-8
    Physics

    Decreasing amplitude of a sound wave decreases the _______.

    Decreasing amplitude of a sound wave decreases the _______.

    PhysicsGrade-8
    parallel
    Grade-8
    Physics

    Cinema theatres are designed for the sound to _______.

    Cinema theatres are designed for the sound to _______.

    PhysicsGrade-8
    Grade-8
    Physics

    To make a sound louder, the sound should be _______.

    To make a sound louder, the sound should be _______.

    PhysicsGrade-8
    Grade-8
    Physics

    If a sound travels a distance of 100 m in 2 s, its velocity is ____ m/s.

    If a sound travels a distance of 100 m in 2 s, its velocity is ____ m/s.

    PhysicsGrade-8
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.