1. Which are more successful in dislodging electrons from a metal surface—photons of violet light or photons of red light? Why? 2. When does light behave as a particle? When does it behave as a wave?...

1. Which are more successful in dislodging electrons from a metal surface—photons of violet light or photons of red light? Why?

2. When does light behave as a particle? When does it behave as a wave?

3. How does the pitch of sound relate to its frequency?