Which technique is used by bats to judge how far an object is?
Ultrasonic echo technique
X- ray technique
Infrasonic echo technique
Ultraviolet radiation technique
A disturbance which carries energy from one place to another without transferring matter is called
A transverse wave
A longitudinal wave
A progressive wave
Water wave
Light of one colour and so of one wavelength is called
Infrared radiation
Ultraviolet radiation
Monochromatic light
X-rays
Waves travel more slowly in
Ocean
River water
Shallow water
Deep water
The height of a crest or the depth of a trough measured from a wave is called
Wavelength
Displacement
Frequency
Amplitude
Which waves can be used for cooking?
Infrared waves
Microwaves
Radio waves
Light waves
The longitudinal and transverse waves produced by earthquake are called
Ultrasonic waves
Seismic waves
If the earthquake occur under the sea, the seismic energy can be transmitted to the water and produce
Ultrasonic echo
Ultra violet radiation
Tsunami
The behaviour of water waves can be studied in
Ripple tank
Sea water
The pitch of a note depends on
The frequency of the sound
The wavelength of the sound
Speed of a sound
All the above
