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Type: Multiple-Choice
Category: Light and Optics
Level: Grade 8
Tags: PS4.B
Author: HTPhysics
Created: 2 years ago

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Light and Optics Question

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Grade 8 Light and Optics

What is the key difference between infrared waves and microwaves?
  1. Infrared waves have shorter wavelengths and higher frequencies than microwaves.
  2. Infrared waves have longer wavelengths and lower frequencies than microwaves.
  3. Infrared waves cannot penetrate materials.
  4. Infrared waves are used for cooking food.