End of Topic Test - EM Waves, Lenses & Heat

Test yourself on End of Topic Test - EM Waves, Lenses & Heat

• "X-rays can completely penetrate through the human body."
  
  Is this statement true or false?

• Which of the following electromagnetic waves carries the most information?

• Which of these types of electromagnetic waves are used to transmit signals from Earth to satellites?

• What causes an object to appear red?

• Which type of lens focuses light onto a principal focus?