Wavelength/Frequency/Energy Unit #4 Flashcard

Front

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

Back

Wavelength (λ) is inversely proportional to frequency (ν) and directly proportional to energy (E). The formulas are: E = hν (where h is Planck's constant) and c = λν (where c is the speed of light).

Front

What is the formula to calculate frequency from wavelength?

Back

Frequency (ν) can be calculated using the formula: ν = c / λ, where c is the speed of light (approximately 3.0 x 10^8 m/s) and λ is the wavelength.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.0 x 10^8 meters per second.

Front

What is the unit of measure for energy?

Back

Energy is measured in Joules (J).

Front

What does the symbol 'λ' represent in physics?

Back

The symbol 'λ' represents wavelength.

Front

What is frequency?

Back

Frequency is the number of cycles of a wave that pass a point in one second, measured in Hertz (Hz).

Front

How do you convert frequency to wavelength?

Back

To convert frequency (ν) to wavelength (λ), use the formula: λ = c / ν.

Front

What is the unit of measure for frequency?

Back

The unit of measure for frequency is Hertz (Hz).

Front

What is the relationship between energy and frequency?

Back

Energy (E) is directly proportional to frequency (ν) as described by the equation E = hν, where h is Planck's constant.

Front

What is Planck's constant?

Back

Planck's constant (h) is a fundamental constant used in quantum mechanics, approximately equal to 6.626 x 10^-34 J·s.