Description : The bats can fly in the dark because (a) They have a better vision in the dark (b) The light startles them (c) They produce ultrasonics (d) None of the above
Last Answer : Ans:(c)
Description : When mechanical waves have a frequency below the audible range, these are called (a) Sonics (b) Infrasonics (c) Ultrasonics (d) Supersonics
Last Answer : Ans:(b)
Description : Sound of frequency below 20 Hz are called (a) Audio sounds (b) Infrasonics (c) Ultrasonics (d) Supersonics
Description : The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as – (1) Audible sounds (2) Ultrasonics (3) Infrasonics (4) Megasonics
Last Answer : (1) Audible sounds Explanation: An audio frequency is characterized as a periodic vibration whose frequency is audible to the average human. It is the property of sound that most determines ... 000 Hz, although the range of frequencies individuals hear is greatly influenced by environmental factors.
Description : Ultrasonics and infrasonics are not detected by __________. a)humans b)animals c)birds d)all of them
Last Answer : a)humans
Description : The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as (1) Audible sounds (2) Ultrasonics (3) Infrasonics (4) Megasonics
Last Answer : Audible sounds