Physics
Grade-8
Easy

Question

Kidney stones can be cured using ________.

  1. Ultra sound
  2. Infra sound
  3. Audible sound
  4. None

hintHint:

Higher frequencies.

The correct answer is: Ultra sound


    • Ultrasonic waves are used to break kidney stones.
    • This is known as Lithotripsy.
    • So, the correct option is a.

    • High energy sound waves are passed through the body without injuring it and break the stone into small pieces.
    • This technique is known as lithotripsy.

    Related Questions to study

    Grade-8
    Physics

    A hearing aid ____ the sound before directing it into the ears of the person wearing it.

    A hearing aid ____ the sound before directing it into the ears of the person wearing it.

    PhysicsGrade-8
    Grade-8
    Physics

    Giraffe uses ______ sounds for communication.

    Giraffe uses ______ sounds for communication.

    PhysicsGrade-8
    Grade-8
    Physics

    Which of the following parts of the ear transmits the electrical signals to the brain for interpretation?

    • The optic nerves relay messages from your eyes to your brain to create visual images.
    • Cochlea is the part of inner ear.
    • Blood vessels deliver blood to the organs and tissues in your body.

    Which of the following parts of the ear transmits the electrical signals to the brain for interpretation?

    PhysicsGrade-8

    • The optic nerves relay messages from your eyes to your brain to create visual images.
    • Cochlea is the part of inner ear.
    • Blood vessels deliver blood to the organs and tissues in your body.

    parallel
    Grade-8
    Physics

    Increase in wavelength ___________ frequency.

    • Wave speed= frequency × wavelength.
    • Frequency = wave speed/wavelength.

    Increase in wavelength ___________ frequency.

    PhysicsGrade-8

    • Wave speed= frequency × wavelength.
    • Frequency = wave speed/wavelength.

    Grade-8
    Physics

    The frequency of vibration of an object is 25000 Hz. A person ____ hear it.

    Frequency above 20KHz is called ultrasound.

    The frequency of vibration of an object is 25000 Hz. A person ____ hear it.

    PhysicsGrade-8

    Frequency above 20KHz is called ultrasound.

    Grade-8
    Physics

    Which of the following is not a part of the middle ear?

    Which of the following is not a part of the middle ear?

    PhysicsGrade-8
    parallel
    Grade-8
    Physics

    The frequency of vibration of an object is 150 Hz. A person ____ hear it.

    The frequency of vibration of an object is 150 Hz. A person ____ hear it.

    PhysicsGrade-8
    Grade-8
    Physics

    The frequency of the sound can be modified to change the infrasound to _____.

    The frequency of the sound can be modified to change the infrasound to _____.

    PhysicsGrade-8
    Grade-8
    Physics

    When an ear drum encounters a rarefaction, it ____.

    Compression or high pressure push the eardrum inwards.

    When an ear drum encounters a rarefaction, it ____.

    PhysicsGrade-8

    Compression or high pressure push the eardrum inwards.

    parallel
    Grade-8
    Physics

    When the air pressure near the ear drum increases, it ____.

    Low pressure regions or rarefactions pull the eardrum outwards.

    When the air pressure near the ear drum increases, it ____.

    PhysicsGrade-8

    Low pressure regions or rarefactions pull the eardrum outwards.

    Grade-8
    Physics

    Ultrasound frequencies are ____ audible frequencies.

    Ultrasound frequencies are ____ audible frequencies.

    PhysicsGrade-8
    Grade-8
    Physics

    As we humans grow older, our ears become ______.

    As we humans grow older, our ears become ______.

    PhysicsGrade-8
    parallel
    Grade-8
    Physics

    Elephants use _____ to communicate with each other.

    • The infrasound frequencies are good for long distance communication because they travel well through objects instead of being reflected.

    Elephants use _____ to communicate with each other.

    PhysicsGrade-8

    • The infrasound frequencies are good for long distance communication because they travel well through objects instead of being reflected.

    Grade-8
    Physics

    What does a hearing-impaired do to hear clearly?

    What does a hearing-impaired do to hear clearly?

    PhysicsGrade-8
    Grade-8
    Physics

    When an ear drum encounters a sound it ____.

    • Compression or high pressure pushes the eardrum inwards.
    • Rarefaction or low pressure pulls the eardrum outwards.

    When an ear drum encounters a sound it ____.

    PhysicsGrade-8

    • Compression or high pressure pushes the eardrum inwards.
    • Rarefaction or low pressure pulls the eardrum outwards.

    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.