Wavelengths, Frequency and Energy

Front

What is the relationship between wavelength, frequency, and energy of a photon?

Back

The energy (E) of a photon is directly proportional to its frequency (f) and inversely proportional to its wavelength (λ). The formulas are: E = hf and c = fλ, where h is Planck's constant and c is the speed of light.

Front

Define wavelength.

Back

Wavelength is the distance between successive crests of a wave, typically measured in meters (m). It is inversely related to frequency.

Front

Define frequency.

Back

Frequency is the number of occurrences of a repeating event per unit of time, measured in hertz (Hz), which is equivalent to cycles per second.

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 Js.

Front

How do you calculate the energy of a photon?

Back

Energy (E) can be calculated using the formula E = hf, where h is Planck's constant and f is the frequency of the photon.

Front

What is the formula to find the frequency of a photon given its energy?

Back

The frequency (f) can be calculated using the formula f = E/h, where E is the energy of the photon and h is Planck's constant.

Front

What is the speed of light in a vacuum?

Back

The speed of light (c) in a vacuum is approximately 3.00 x 10^8 m/s.

Front

What is the relationship between frequency and wavelength?

Back

Frequency (f) and wavelength (λ) are inversely related; as frequency increases, wavelength decreases, and vice versa. The relationship is given by the formula c = fλ.

Front

What type of electromagnetic radiation has the shortest wavelength?

Back

X-rays have the shortest wavelength among common types of electromagnetic radiation.

Front

What is the wavelength of a photon with a frequency of 5.1 x 10^14 Hz?

Back

The wavelength (λ) can be calculated using the formula λ = c/f. For f = 5.1 x 10^14 Hz, λ = 3.00 x 10^8 m/s / 5.1 x 10^14 Hz = 5.88 x 10^-7 m.