Biology
Grade-8
Easy
Question
The light that we see is a type of ____________ signal.
- Chemical
- Mechanical
- Thermal
- Electromagnetic
Hint:
As light is produced by the acceleration of charged particles & the law of electromagnetism states that: an accelerated charge produces an electromagnetic wave, light is an electromagnetic wave. Actually light is the transfer of energy from one part of an electromagnetic field
The correct answer is: Electromagnetic
- The light we see is an electromagnetic Wave.
- Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field.
- This changing magnetic field then creates a changing electric field.
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