The depressed portion of a wave is called
Crust
Trough
Amplitude
Wavelength
The unit of frequency is
Lambda
Hertz
Second
Metre
The two and fro motion of the pendulum about a fixed point is called
Frequency
Displacement
Oscillation
An oscillating string is an example of
Transverse wave
Longitudinal wave
Mechanical wave
Electromagnetic wave
What is the relation between velocity ( v ), frequency ( f ) and wavelength ( λ ) of a wave?
f = V λ
V = f λ
λ = Vf
V = f/λ
When the pendulum is at rest it is said to be in
Equilibrium position
Maximum displacement
Period
Longitudinal waves and transverse waves together called
Sound waves
Electromagnetic waves
Light waves
Mechanical waves
The elevated portion of a wave is called
The mass of the bob of a simple pendulum can be found out using a
Spring balance
Common balance
Simple pendulum
None of these
Which of the following is a device used for doing experiments in sound?
Light
Air
Turning fork
Scale