Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Physics Wave

What waves are used in an echocardiogram that can provide a moving picture of your heart?

1

Ultrasonic waves

2

Radio waves

3

Electromagnetic waves

4

More than one of the above

5

None of the above

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