S2 Physics - The EM Spectrum

What is the speed of light in a vacuum?

• 300,000 km/s

• 150,000 km/s

• 100,000 km/s

• 200,000 km/s

Which of the following is used in night vision technology?

• Microwaves

• Infrared radiation

• Ultraviolet light

• Radio waves

Which of the following is a type of non-visible radiation?

• Gamma rays

• Radio waves

• Visible light

• Both a and b

Which of the following types of radiation has highest energy?

• Infrared

• Radio waves

• Gamma rays

• X-rays

What is one application of ultraviolet radiation?

• Sterilization of medical equipment

• Communication

• Broadcasting radio signals

• Cooking food

Which type of radiation can cause damage to DNA?

• Gamma rays

• Visible light

• Infrared radiation

• Radio waves

What type of electromagnetic wave is used for television signals?

• Microwaves

• Radio waves

• Gamma rays

• Infrared

What type of waves are used for mobile phone communication?

• Radio waves

• X-rays

• Gamma rays

• Visible light

What is the main difference between visible and non-visible radiation?

• The wavelength

• The frequency

• The energy

• The speed

Which electromagnetic wave has the longest wavelength?

• X-rays

• Microwaves

• Radio waves

• Gamma rays