Compared to RF energy, microwave energy is typically at a higher frequency and shorter wavelength.

Compared to RF energy, microwave energy is typically at a higher frequency and shorter wavelength.

• A. Higher frequency and shorter wavelength
• B. Lower frequency and longer wavelength
• C. Equal frequency and wavelength
• D. Higher frequency and longer wavelength

Answer: (A)

Electromagnetic waves in a medium share the same speed, so frequency and wavelength are tied together by the equation c ≈ fλ. That means as frequency goes up, wavelength goes down. Microwave energy sits at higher frequencies than typical RF energy, so its wavelength is shorter. For example, an RF signal around 100 MHz has about a 3-meter wavelength, while a microwave around 3 GHz has about a 10-centimeter wavelength. So the statement “higher frequency and shorter wavelength” is the correct way to describe microwaves relative to RF. The other possibilities would require either lower frequency and longer wavelength, equal values, or a longer wavelength with a higher frequency, which contradicts the inverse fλ relationship.

Electromagnetic waves in a medium share the same speed, so frequency and wavelength are tied together by the equation c ≈ fλ. That means as frequency goes up, wavelength goes down. Microwave energy sits at higher frequencies than typical RF energy, so its wavelength is shorter. For example, an RF signal around 100 MHz has about a 3-meter wavelength, while a microwave around 3 GHz has about a 10-centimeter wavelength. So the statement “higher frequency and shorter wavelength” is the correct way to describe microwaves relative to RF. The other possibilities would require either lower frequency and longer wavelength, equal values, or a longer wavelength with a higher frequency, which contradicts the inverse fλ relationship.