Q1. What is an electromagnetic wave?
Q2. What is an electric or magnetic field?
Q3. How is visible light produced?
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Q1. What is an electromagnetic wave?
Q2. What is an electric or magnetic field?
Q3. How is visible light produced?
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Answer:
1.Electromagnetic waves are a form of energy waves that have both an electric and magnetic field. Electromagnetic waves are different from mechanical waves in that they can transmit energy and travel through a vacuum. Electromagnetic waves are classified according to their frequency.
2.The magnetic field is an exerted area around the magnetic force. ... The direction of the magnetic field is indicated by lines. While the electric fields are generated around the particles which obtain electric charge. During this process, positive charges are drawn, while negative charges are repelled.
3.Most of the visible light on Earth comes from the sun. The sun and other stars produce light because they are so hot. They glow with light due to their extremely high temperatures. This way of producing light is called incandescence.
Explanation:
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