Physics Wave Motion and Sound

Physics Wave Motion and Sound

Pick the correct option.

 According to Hooke’s law the change in the length of a spring is directly proportional to:

a) Its weight b) Applied force

c) Its temperature d) Current passing through it

 In simple Harmonic Motion the acceleration of a body is always directed towards and proportional to its displacement from:

a) Its mean position b) The point at which it is attached to the wall

c) The point at which force is applied d) None of these

 One complete round trip of a body about a mean position is called a:

a) Rotation b) Vibration

c) Period d) Frequency

The maximum displacement of a vibrating body from the equilibrium position is called:

a) Circumference b) Radius

c) Amplitude d) Oscillation

The kinetic energy of a mass attached to a spring is maximum at:

a) Mean position b) Extreme position

c) Between extreme position and mean position d) None of these

 The frequency of a second’s pendulum is:

a) 1 Hz b) 2 Hz

c) 4 Hz d)  Hz

 The waves that require a medium for their propagation are called:

a) Transverse waves b) Electromagnetic waves

c) Matter waves d) Mechanical waves

 Longitudinal waves are those in which the particles of the medium move:

a) In the direction of wave motion b) Opposite to the direction of wave motion

c) Back and forth parallel to the direction of the wave motion

d) Perpendicular to the direction of waves

 A ripple tank is used to study:

a) Nature of water b) Properties of light

c) Various features of waves d) None of these

 Water waves are not perfectly transverse and their particles move in:

a) Elliptical orbits b) Circular orbits

c) Straight lines d) Slanting lines

 The bouncing back of a wave from the boundary of two different media is known as:

a) Refraction b) Transmission

c) Diffraction d) Reflection