F4 Chapter 5.7 Electromagnetic wave

Diagram below shows a cooking utensil. Which type of wave is used by the cooking utensil to cook food?

• Infrared

• Microwave

• Ultraviolet

• Gamma rays

Gamma ray used to maintain the freshness of vegetables. Which of the pair of characteristics is correct about gamma ray?

• A

• B

• C

• D

Which of the following statement is correct about radio waves?

• Longitudinal waves

• The waves that require a medium to travel

• The velocity of the waves is influenced by the wavelength

• Consist of both magnetic fields and electric fields

Which electromagnetic wave has the highest frequency and shortest wavelength?

• Radio wave

• Gamma ray

• Microwave

• X-ray

Which of the following is the application of the wave X?

• 
• 
• 
• 

Which of the following sequence is correct of ascending order of frequency?

• Radio wave, Infrared, X-ray

• X-ray, microwave, ultraviolet

• visible light, Infrared, gamma ray

• ultraviolet, infrared, X-ray

Which of the wave below has the longest wavelength?

• 
• 
• 
• 

Which of the following is correct about electromagnetic spectrum?

• Need medium to propagate

• high frequency

• long wavelength

• travel with speed of light

Diagram show a radar system used to determine the distance of UFO. Which of the following wave is used?

• Radio wave

• ultrasound

• microwave

• ultraviolet

Which of the following wave is use to detect the fracture of bone?

• microwave

• infrared

• ultraviolet

• X-ray