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The sound energy has wide application in medical science, as well as in many other fields. The sound of high frequency used in medical science is called ultrasound. The ultrasound used for the the checking of the function of human heart is called_____.

(a.) Ultrasonography

(b.) Echocardiography

(c.) Ultrasounds

(d.) Sonography

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The correct option of this question is (B) Echocardiography.

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