1. Simple harmonic motion (SHM) is defined as motion where ...

• A. the velocity is proportional to the displacement, directed away from the centre of motion
• B. the velocity is proportional to the acceleration, directed towards the centre of motion
• C. the acceleration is proportional to the velocity, directed away from the centre of motion
• D. the acceleration is proportional to the displacement, directed towards the centre of motion

The graph below show a progressive (travelling) transverse wave at a particular point in time. Points P and Q on the wave are moving in a direction perpendicular to the wave. The wave is moving left to right in the diagram. 2. What is the phase difference between P and Q?

• A. π
• B. π /2
• C. π /4
• D. π /8

3. The subsequent motion of the two points will be:

• A. Both points move upwards
• B. Both points move downwards
• C. P moves up, Q moves down
• D. Q moves up, P moves down
4. In a sound wave regions of high pressure are compressions, and regions of low pressure are called ...
• A. depressions
• B. decompressions
• C. rarefactions
• D. expansions
5. The wavelength of an ultra-violet wave is approximately ...
• A. 10-4 m
• B. 10-6 m
• C. 10-8 m
• D. 10-10 m

A mass oscillates on a spring as shown, performing simple harmonic motion (SHM). Oleg Alexandrov
http://commons.wikimedia.org/

6. Which of these answers gives the points of maximum velocity and acceleration?

 Velocity maximum at ... Acceleration maximum at.. A the top the centre B the centre the top C the top the top D the centre the centre

7+8: The graph below shows the displacement x of the mass shown above, at a time t. 7. What will be the phase difference between this graph and a graph showing the velocity of the mass?
• A) In phase
• B) π /4 phase difference
• C) π /2 phase difference
• D) π phase difference
8. What is the frequency of this oscillation?
• A) 0.25 Hz
• B) 0.5 Hz
• C) 2 Hz
• D) 4 Hz