velocity of source

velocity of listener

distance between source and observer

All of these

Both particle and wave approaches help us understand different phenomenon

Light is schizophrenic i.e. sometimes it behaves like a particle and other times like a wave.

Light is a set of particles

Light is a set of waves

dual / schizophrenic model

a wave model

particle model

None of the above

a wave model

particle model

dual / schizophrenic model

None of the above

locus of all adjacent points at which the phase of vibration of a physical quantity associated with the wave is the same

series of points on the wave with same frequency

locus of all adjacent points at which the Electric field is the same

series of points on the wave with same amplitude