1.

True or false? (a) Frequency increases if amplitude is increased. (b) A bat uses the principle of the radar system while flying at night. (c) Ultrasonic sounds are produced in the sonar system.

Answer»

True or false?



(a) Frequency increases if amplitude is increased.



(b) A bat uses the principle of the radar system while flying at night.



(c) Ultrasonic sounds are produced in the sonar system.



Discussion

No Comment Found