The distance between two successive crest or trough is called
Displacement
Wavelength
Frequency
Amplitude
The pitch of a note depends on
The frequency of the sound
The wavelength of the sound
Speed of a sound
All the above
A ship can determine the depth of a shoal of fish or the sea-bed with the help of
A sonar
Radio waves
Micro waves
X-rays
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
Light of one colour and so of one wavelength is called
Infrared radiation
Ultraviolet radiation
Monochromatic light
The spreading of wave at the edges or obstacle is called
Reflection
Refraction
Diffraction
Interference
The phenomenon in which electrons are ejected from metal surfaces when electromagnetic waves fall on them is called
Photoelectric effect
Magnetism
Spectrum
If the earthquake occur under the sea, the seismic energy can be transmitted to the water and produce
Ultrasonic echo
Ultra violet radiation
Seismic waves
Tsunami
In the electromagnetic spectrum which waves have the longest wave length?
Microwaves
Light wave
X -rays
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
