Question

Which of the following statements is incorrect regarding wave theory:

• A. The distance between successive peaks and troughs is called wavelength
• B. These waves consist of electric and magnetic fields perpendicular to each other and are perpendicular to the direction of propagation of the radiation
• C. Electromagnetic radiation travels with a velocity of $3\times {10}^8$ m/s
• D. Electromagnetic waves do not require any medium for propagation

Answer 1

The correct option is A The distance between successive peaks and troughs is called wavelength

Wavelength is the distance between two successive peaks or two successive troughs of a wave.