Q. Most commercial ultrasonic testing is performed at frequencies between: (Solved)
1. 1 MHz and 10 MHz
2. 1 MHz and 100 MHz
3. 10 MHz and 50 MHz
4. 1 MHz and 25 MHz
- d. 1 MHz and 25 MHz
1. 1 MHz and 10 MHz
2. 1 MHz and 100 MHz
3. 10 MHz and 50 MHz
4. 1 MHz and 25 MHz