Which of the following is the number of oscillations per second?
Frequency
Period
Amplitude
Wavelength
The depressed portion of a wave is called
Crust
Trough
The particles of the medium vibrate perpendicular to the direction of propagation of the wave in
Transverse waves
Longitudinal waves
Mechanical waves
All the above
An oscillating string is an example of
Transverse wave
Longitudinal wave
Mechanical wave
Electromagnetic wave
The two and fro motion of the pendulum about a fixed point is called
Displacement
Oscillation
The distance between two successive crust or trough is called
In which of the following waves, the particles of the medium vibrate in a direction parallel to the direction of propagation of wave?
Sound wave is an example of
The mass of the bob of a simple pendulum can be found out using a
Spring balance
Common balance
Simple pendulum
None of these
The unit of frequency is
Lambda
Hertz
Second
Metre