28 DOL

What is the speed of light in a vacuum?

Which part of the electromagnetic spectrum has the shortest wavelength?

• Radio waves

• Microwaves

• X-rays

• Infrared

Which of the following is an application of electromagnetic waves?

• Cooking food in a microwave oven

• Measuring temperature with a thermometer

• Calculating the area of a circle

• Balancing chemical equations

What is the primary difference between radio waves and gamma rays in the electromagnetic spectrum?

• Radio waves have higher energy than gamma rays.

• Gamma rays have longer wavelengths than radio waves.

• Radio waves have longer wavelengths than gamma rays.

• Gamma rays travel faster than radio waves.

Derive the wave equation for electromagnetic waves using the relationship between speed, frequency, and wavelength.

Which of the following electromagnetic waves is used in medical imaging to view the inside of the human body?

• Radio waves

• X-rays

• Microwaves

• Ultraviolet rays

If the frequency of an electromagnetic wave is doubled, what happens to its wavelength, assuming the speed of light remains constant?

• The wavelength is halved.

• The wavelength is doubled.

• The wavelength remains the same.

• The wavelength is quadrupled.

Which of the following best describes the electromagnetic spectrum?

• A range of all possible frequencies of electromagnetic radiation

• A list of all known chemical elements

• A chart of the visible light spectrum only

• A diagram of sound wave frequencies