Question

Choose the correct description of what do we mean when we say that light is an electromagnetic wave and the relationship among wavelength, frequency, and speed for light waves. choose the correct description of what do we mean when we say that light is an electromagnetic wave and the relationship among wavelength, frequency, and speed for light waves. we say that light is an electromagnetic wave because light is a oscillation of electric and magnetic fields. frequency=speedoflightwavelength we say that light is an electromagnetic wave because light is a motion of electric and magnetic fields. frequency=speedoflightwavelength we say that light is an electromagnetic wave because light is a oscillation of electric and magnetic fields. frequency=wavelengthspeedoflight we say that light is an electromagnetic wave because light is a motion of electric and magnetic fields. frequency=wavelengthspeedoflight

Answer 1

An electromagnetic wave is the oscillation of electric and magnetic fields that propagate in the space. Electromagnetic waves carry energy and they do not need a medium to propagate (they can travel in vacuum as well).
The correct relationship between the speed of the wave (speed of light, c), the frequency f and the wavelength $\lambda$ is
$f= \frac{c}{ \lambda}$