Wavelength/Frequency/Energy Unit #4 Flashcard

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa. This relationship is described by the equation: c = λν, where c is the speed of light, λ is the wavelength, and ν is the frequency.

Front

What is the symbol for wavelength?

Back

The symbol for wavelength is λ (lambda).

Front

What unit is energy measured in?

Back

Energy is measured in Joules.

Front

Which color in the visible spectrum has the longest wavelength?

Back

Red has the longest wavelength in the visible spectrum.

Front

What type of electromagnetic radiation has very short wavelengths and can cause damage to living tissues?

Back

Gamma rays have very short wavelengths and can cause damage to living tissues.

Front

How do you calculate the wavelength of light given its frequency?

Back

Use the formula: λ = c / ν, where λ is the wavelength, c is the speed of light (approximately 3.00 x 10^8 m/s), and ν is the frequency.

Front

What is the frequency of light if its wavelength is 500 nm?

Back

To find the frequency, use the formula: ν = c / λ. Convert 500 nm to meters (500 nm = 5.00 x 10^-7 m) and calculate ν.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.00 x 10^8 meters per second.

Front

What is the relationship between energy and frequency of electromagnetic waves?

Back

Energy is directly proportional to frequency; as frequency increases, energy increases. This relationship is described by the equation: E = hν, where E is energy, h is Planck's constant (6.626 x 10^-34 J·s), and ν is frequency.

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