The intensity (i.e. photon energy or field strength) is related to the characteristics of the wave by Planck’s constant. i.e. the
photon energy is inversely proportional to the wavelength
.
Generally, electromagnetic radiation is classified by wavelength into
radio wave, microwave, infrared, visible light, ultraviolet, X-rays and gamma rays
. The behavior of EM radiation depends on its wavelength. … A common laboratory spectroscope can detect wavelengths from 2 nm to 2500 nm.
What is the relationship between the wavelength and the intensity of light?
The color or hue of light depends on its wavelength, the distance between the peaks of its waves.
The brightness of light
is related to intensity or the amount of light an object emits or reflects. Brightness depends on light wave amplitude, the height of light waves.
What is the formula of radiation intensity?
2.1.
The radiation intensity is a far field parameter which can be obtained by simply multiplying the radiation power density by the square distance, i.e., (2.99) (2.100)
P r a d = ∮ Ω U d Ω = ∫ 0 2 π ∫ 0 π U sin
What is difference between intensity and wavelength?
Energy per unit time is measured in watts, so intensity is measured in watts per square meter. … For a wavelength of, say 508 nm, the height of the graph gives the intensity of just that part of the light that has a wavelength between 507.5 nm and 508.5 nm.
What is the relationship between current and wavelength?
Current appears to
be inversely proportional to the square of the wavelength
(Graph 1). This relationship is expected because kinetic energy and wavelength are inversely proportional, and current is a measure of how many electrons have enough energy to travel from the cathode to the anode in a given amount of time.
Does intensity depend on wavelength?
The intensity of light depends on- 1)
amplitude
2) frequency 3) wavelength 4) none. The intensity of a wave is directly proportional to the amplitude of the wave. … its intensity will depend on the amplitude of the wave.
Which has the longest wavelength?
Red
has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light. Ultraviolet (UV) light—is radiation with a wavelength shorter than that of visible light, but longer than X-rays, in the range 10 nm to 400 .
What are gamma rays wavelength?
Gamma rays are a form of electromagnetic radiation, as are radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves. … Gamma rays have frequencies greater than about 10^19 cycles per second, or hertz (Hz), and wavelengths of
less than 100 picometers (pm), or 4 x 10^9 inches.
What is the highest frequency?
The highest frequency colour, which is
violet
, also has the most energy when it comes to visible light. The lowest visible light frequency, which is red, has the least energy. There is more energy in higher-frequency waves. Gamma rays have the shortest wavelengths and highest frequencies of all electromagnetic waves.
What is the unit of intensity of radiation?
The SI unit of radiant intensity is
the watt per steradian (W/sr)
, while that of spectral intensity in frequency is the watt per steradian per hertz (W·sr
− 1
·Hz
− 1
) and that of spectral intensity in wavelength is the watt per steradian per metre (W·sr
− 1
·m
− 1
)—commonly the watt per steradian per nanometre (W·sr
− 1
·nm
− 1
).
What do we mean by intensity of radiation?
The intensity of radiation is defined as
the rate of emitted energy from unit surface area through unit solid angle
. The radiation from a surface has different intensities in different directions.
What does radiation intensity depend on?
All bodies radiate energy. The amount of radiation a body emits depends on
its temperature
. The experimental Wien’s displacement law states that the hotter the body, the shorter the wavelength corresponding to the emission peak in the radiation curve.
Which Colour Has Highest intensity?
The frequency of the radiation is proportional to its energy and the wavelength of the radiation is inversely proportional to the energy. Red is the lowest energy visible light and
violet
is the highest. A solid object has color depending on the light it reflects.
What is relation between frequency and intensity?
if you consider light is wave, intensity is related to light radiation energy and
frequency is the number of waves per second
. … Frequency is related to photon’s energy (E = hν , E is energy, h is planck’s constant and ν is frequency) . In particle nature, intensity is related to number of photons in the radiation.
What is the formula of intensity of light?
The energy of a photon is E=hf, so the total intensity for n photons is
I=n⋅hfAΔt
.
