EM waves AS physics

What is electromagnetic wave?

• Electromagnetic waves are waves of electric and magnetic fields that travel through space.
• Electromagnetic waves are vibrations in solid materials that produce heat.
• Electromagnetic waves are particles that move in a straight line.
• Electromagnetic waves are sound waves that travel through air.

All electromagnetic waves in free space are:

• longitudinal

• transverse

• mechanical

• stationary

The speed of all electromagnetic waves in free space is approximately:

• 1.0 x 10^6 m/s

• 3.0 x 10^8 m/s

• 1.05 x 10^3 m/s

• 1.0 x 10^5 m/s

Which region of the electromagnetic spectrum has the longest wavelength?

• Infrared

• Gamma rays

• Radio waves

• Ultraviolet

Which EM wave has the highest frequency?

• Ultraviolet rays
• X-rays
• Microwaves
• Gamma rays

Visible light wavelengths range approximately from:

• 450 nm to 800 nm
• 300 nm to 500 nm
• 350 nm to 600 nm
• 400 nm to 700 nm

Which correctly orders the EM spectrum from longest to shortest wavelength?

• Gamma rays, X-rays, Ultraviolet, Visible light, Infrared, Microwaves, Radio waves
• Infrared, Microwaves, Radio waves, Visible light, Ultraviolet, Gamma rays, X-rays
• Visible light, Infrared, Microwaves, Gamma rays, X-rays, Ultraviolet, Radio waves
• Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, Gamma rays

Radio waves typically have wavelengths in the range:

• 10^-1 to 10^−10 m

• 10^-6 to 10^−3 m

• 10^-3 to 10^−1 m

• 10^-1 to 10^4 m

Which EM wave has wavelengths roughly around 1 mm to 1 m?

• Radio waves
• Microwaves
• Infrared waves
• Ultraviolet waves

Gamma rays typically have wavelengths:

• Longer than 1 m

• In the range 400–700 nm

• Shorter than 10^-10 m

• Around 10^−3 m