Electromagnetic Radiation

Front

What is electromagnetic radiation?

Back

Electromagnetic radiation is a form of energy that travels through space at the speed of light and includes a range of wavelengths and frequencies, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

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

Back

The frequency of electromagnetic radiation is inversely proportional to its wavelength. This means that as the frequency increases, the wavelength decreases, and vice versa.

Front

Which color of visible light has the longest wavelength?

Back

Red light has the longest wavelength in the visible spectrum.

Front

Which color of visible light has the shortest wavelength?

Back

Violet light has the shortest wavelength in the visible spectrum.

Front

What is the order of colors in the visible spectrum from longest to shortest wavelength?

Back

The order is red, orange, yellow, green, blue, indigo, violet.

Front

What is the energy of a photon?

Back

The energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength, calculated using the formula E = hf, where E is energy, h is Planck's constant, and f is frequency.

Front

Which color has the highest energy per photon?

Back

Violet light has the highest energy per photon in the visible spectrum.

Front

Which color has the lowest energy per photon?

Back

Red light has the lowest energy per photon in the visible spectrum.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

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 380 nm (violet) to 750 nm (red).