Which Statement About Electromagnetic Radiation Is NOT Correct

question 140

Multiple Choice

Which statement about electromagnetic radiation is NOT correct?

• A)Electromagnetic radiation consists of perpendicular oscillating electric and magnetic fields.
• B)Electromagnetic radiation is emitted by all stars.
• C)All electromagnetic radiation is visible to the eye.
• D)Electromagnetic radiation spans a very wide range of wavelengths, from gamma rays to radio waves.
• E)The frequency and wavelength of electromagnetic radiation are inversely proportional to each other.

---

Definitions:

LED Status Indicator

A light-emitting diode used to display the operational state or condition of a device or system.

Proximity Switches

Sensors that detect the presence or proximity of an object without physical contact, commonly used in industrial control applications.

Sensing Range

The maximum and minimum distances within which a sensor can accurately detect an object.

Solar Cell

A device that converts light energy directly into electricity by the photovoltaic effect, typically used in solar panels.