Ear has a thin membrane called
Eardrum
Stapes
Malleus
Incus
The audible range of the average human ear is between
2000 Hz to 20,000 Hz
2 Hz to 20Hz
200 Hz to 2,000 Hz
20 Hz to 20,000 Hz
An instrument working on the basis of reflection of sound is
Periscope
Stethoscope
Thermometer
Barometer
The speed of sound in air is
370 m/s
365m/s
344m/s
354m/s
Range of freequency associated with ultrasound is
Equal to 20,000 Hz
More than 20,000 Hz
Less than 20,000 Hz
Cannot be determined
Speed of sound is more in
Solids
Liquids
Gases
Equal speed in solids, liquids and gases
The sound produced in the surrounding is collected in to our ear by
Pinna
Sound waves in air are
Transverse
Longitudinal
Stationary
Regular
Which os the fllowing organism use ultrasound?
Owl
Crow
Bat
Cow
Sound waves obey
Laws of reflection
Laws of motion
Gas Laws
Law of conservation of momentum
