In electro magnetic spectra, the wave length and frequencies are inversely related. A radio can tune in to any station in the 7.5 MHz to 12 MHz band. Determine the corresponding wave length band.

A radio can tune into any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?

Nobody can Imagine a world without sound. Sound is a part of our life- musics, ripples, echoes etc. have a lot of applications.Doctors use an ultrasonic scanner to diagnose tumour tissues. If the frequency of the scanner is locate 4.2MHz and the speed of sound wave in the tissue of is 1.7 kms find the wavelength of the sound wave.

A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?

Modulation is a process employed to superimpose a carrier wave with a signal wave. A message signal of frequency 10 KHz and peak voltage of 10 volts is used to modulate a carrier wave of frequency 1 MHz and peak voltage of 20 volts.Determine the modulation index and frequencies of side bands.