Oscillations and waves

Maximum displacement from equilibrium position is called

• trough

• crest

• amplitude

• equilibrium

The number of wavelengths that pass a point each per second is:

• frequency

• period

• longitudinal

• transverse wave

When a body is executing SHM, the restoring force acting on the body is proportional to

• the displacement

• the length of the pendulum

• the mass

• the frequency

A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its velocity is a maximum?

• at either A or B

• midway between A and B

• one-third of the way between A and B

• one-fourth of the way between A and B

A stiff material has a:

• high spring constant
• low spring constant
• spring constant of any value
• spring constant which is difficult to predict

Which one is correct, in case of oscillation?

• Displacement and restoring force are in the same direction.

• Displacement is always away from mean position where as restoring force is always towards the mean position.

• Displacement is always towards the mean position where as restoring force is always away from the mean position.

• The direction of displacement and restoring force is random.

Which force (s) is (are) present in case of damped oscillation?

• Restoring force

• Damping force

• Both restoring force and damping force.

• Restoring force, damping force and external periodic force.

The solution of under damped motion is

• 
• 
• 
• 

Which of the following is non-oscillatory in nature?

• Under damped & over damped

• Critically damped & over damped

• Critically damped & under damped

• Forced oscillation & over damped

An oscillatory system is critically damped. Which statement is true?

• The amplitude of oscillation decreases exponentially.

• The displacement decreases to zero in a short time.

• Energy dissipates from the system linearly with time.

• The system takes a long time to come to rest.