What is supersonic waves?

The supersonic jets causes pollution by the thinning of

What is stationary wave and how is it produced? State the characteristics of such wave.

The wavelength of a microwave and that of an ultrasonic wave are equal. What is the ratio of their frequencies?

What is wavefront of a wave?

What are the Broglie waves?

What is the significance of an enlarged Q wave in electrocardiogram?

What is microwave? Why Is this wave used in RADAR?

What conclusion is drawn from Davisson-Germer experiment? Are matter waves electromagnetic waves? Explain?