Electromagnetic Spectrum

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

What is the relationship between frequency and wavelength in electromagnetic waves?

Back

High frequency waves have short wavelengths, while low frequency waves have long wavelengths.

Front

Which type of electromagnetic radiation has the highest frequency?

Back

Gamma rays have the highest frequency and the shortest wavelength in the electromagnetic spectrum.

Front

What type of signal is characterized by continuous changes in amplitude and frequency?

Back

An analog signal is characterized by continuous changes in amplitude and frequency.

Front

What type of signal is represented by discrete values or levels?

Back

A digital signal is represented by discrete values or levels.

Front

What is the primary use of X-rays in medicine?

Back

X-rays are primarily used for medical imaging to diagnose health issues in bones and teeth.

Front

Which type of electromagnetic radiation is used in remote controls?

Back

Infrared radiation is commonly used in remote controls.

Front

What is the visible spectrum?

Back

The visible spectrum is the portion of the electromagnetic spectrum that can be seen by the human eye, typically ranging from wavelengths of about 400 nm (violet) to 700 nm (red).

Front

What type of electromagnetic radiation can cause sunburn?

Back

Ultraviolet rays can cause sunburn.

Front

What is the main difference between analog and digital signals?

Back

The main difference is that analog signals are continuous, while digital signals are discrete.