Energy, Wavelength and Frequency

Front

What is the unit of measure for frequency?

Back

Hertz (Hz) is the unit of measure for frequency, representing cycles per second.

Front

How is energy measured?

Back

Energy is measured in Joules (J).

Front

What is the formula to calculate wavelength from frequency?

Back

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

Front

What is the unit of Energy?

Back

The unit of energy is Joules (J).

Front

What does 'h' stand for in physics?

Back

In physics, 'h' stands for Planck's Constant, which is approximately 6.626 x 10^-34 Js.

Front

What is the relationship between energy and frequency?

Back

Energy (E) is directly proportional to frequency (f) and can be calculated using the formula E = hf, where h is Planck's Constant.

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 (m/s).

Front

How do you convert frequency to wavelength?

Back

To convert frequency to wavelength, use the formula λ = c/f, where c is the speed of light and f is the frequency.

Front

What is the frequency of light with a wavelength of 500 nm?

Back

The frequency can be calculated using f = c/λ. For 500 nm, f = 3.0 x 10^8 m/s / 500 x 10^-9 m = 6.0 x 10^14 Hz.

Front

What is the energy of a photon with a frequency of 5 x 10^14 Hz?

Back

The energy can be calculated using E = hf. E = (6.626 x 10^-34 Js)(5 x 10^14 Hz) = 3.313 x 10^-19 J.