Which one of the following statements is not correct?
- Ultrasonic waves cannot get reflected, refracted or absorbed.
- Ultrasonic waves are used to detect the presence of defects like cracks, porosity, etc. in the internal structure of common structure materials
- Ultrasonic waves can be used for making holes in very hard materials like diamond
- Ultrasonic waves cannot travel through vacuum.
Answer
Option 1 : Ultrasonic waves cannot get reflected, refracted or absorbed.
True or false? sound waves cannot be reflected.
