Frequency Modulation

Match the following {:("(a) Amplitude","(e) Amplitude and angular frequency remains constant"),("(b) Frequency modulation ","(f) Digital transmission"),("(c) Phase modulation","(g) noise creeps in"),("(d) Pulse code modulation","(h) Stereophonic transmission"):}

The maximum carrier swing allowed in frequency modulating is :

In frequency modulated wave

What are the main difference between amplitude modulated and frequency modulated waves?

A frequency modulated wave is formed by superimposing a data signal of frequency 500 Hz on a carrier wave of amplitude 15 V and frequency 40 MHz, with modulation index of 0.01. Establish the equation of the FM wave.