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

Cleaning of hard to reach places inside a spiral tube, odd shaped parts, electronic components etc. is done using which waves?

1

Ultrasonic waves

2

Infrasonic waves

3

Subsonic waves

4

More than one of the above

5

None of the above

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