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Lowering the wavelength of incident light increases its energy, which in turn can increase the kinetic energy of the emitted photoelectrons. This is in line with the photon energy equation E=hf, where E is energy, h is Planck's constant, and f is frequency (which is inversely proportional to wavelength).
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What were electrons doing when the green light was emitted?
When green light is emitted, electrons are transitioning from higher energy levels to lower energy levels within an atom. This release of energy appears as light in the green wavelength range.
What does the following phrase mean relating to the quantum theory. As the wavelength increase to infinity or decrease to zero the intensity of radiation is zero?
As the wavelength increases to infinity the electro-magnetic continuum take on a new base value and with no variation has no radiation to transmit. As the wavelength decreases to zero the energy packet become a massive body and therefore is no longer a radiating.
The lower the frequency of a sound wave the?
For electromagnetic waves:Speed(v)=frequency(f)*wavelength(lambda)ORwavelength(lambda)=speed(v)/frequency(f)Therefore, wavelength and frequency have an Inverse relationship this means that assuming speed remains constant if the wavelength increases (gets longer) the frequency will decrease.
What does the slope of the graph of photoelectric current versus intensity signify in the photoelectric effect?
The current rises as does the intensity of light detected. The more light the greater the intensity, and the greater the current. The answer to the question is that photoelectric current displayed on a graph is shown as a slope that varies with the intensity of light. Someimes it can go up, sometimes it can go down.The ultimate answer is that the photoelectric effect is unreliable, but it is improving!
When an electron drops to a lower level what is the energy of the photon released apex?
When an electron drops to a lower energy level in an atom, it releases energy in the form of a photon. The energy of the emitted photon corresponds to the difference in energy between the two levels, calculated using the equation (E = h \nu), where (E) is the energy of the photon, (h) is Planck's constant, and (\nu) is the frequency of the emitted light. This energy can also be expressed in terms of wavelength using the equation (E = \frac{hc}{\lambda}), where (c) is the speed of light and (\lambda) is the wavelength. Thus, the energy of the photon released is specific to the transition between the electron's initial and final energy states.
How does the Doppler shift affect waves reflected by or emitted from a moving body?
The Doppler shift affects waves reflected or emitted by a moving body as a stationary object's waves are equidistantly placed from each other but when an object moves one way the wavelength of the emitted waves is higher on the side of the destination but on the opposite side the wavelengths are lower this is how the Doppler shift affects emitted or reflected waves. The wavelength is given as lambda or λ and velocity is given by v.
What were electrons doing when the green light was emitted?
When green light is emitted, electrons are transitioning from higher energy levels to lower energy levels within an atom. This release of energy appears as light in the green wavelength range.
What happens to the pitch when the sound source moves away from you?
When the sound source moves away from you, the pitch perceived by your ears decreases. This is because the sound waves from the moving source are stretched out, resulting in a longer wavelength and a lower frequency.
Doppler effect states that the motion of any object can?
change the perceived frequency of waves (such as sound or light) emitted by that object. If the object is moving toward an observer, the waves are compressed, resulting in a higher frequency (blueshift); if the object is moving away, the waves are stretched, resulting in a lower frequency (redshift).
The lower atmosphere is directly warmed from?
It's warmed from the surface. Shortwave radiation passes through the atmosphere, or at least about half of it, where it reaches the ground and is absorbed. The ground re-emits it at a longer wavelength, thereby warming the lower atmosphere.
What is true about the Doppler effect?
The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. It causes the frequency of the wave to appear higher when the source and observer are moving toward each other, and lower when moving away from each other. This effect is commonly observed in situations like the sound of a passing siren.
The wavelengths of thermal infrared emitted by the Earth are?
The Earth emits thermal radiation of a much lower intensity in the infrared rather than visible region . The wavelength of infrared rays is around 10^-6 meter.
What does the wavelength of light tell us about an objects movement?
Assuming the object's moving rapidly enough to affect the light from it observedly: If approaching the light will be biased to blue (higher-f, lower wavelength); If receding, the light will be redder (red-shift), or lower-f, longer wavelength) by Doppler effect. If the true spectrum can be determined then the shift either way can be used to calculate the object's speed relative to the observer (not necessarily its true speed!).
When an electron in atom changes energy states a photon is emitted If the photon has a wavelength of 550 nm how did the energy of the electron change?
The energy of the electron decreased as it moved to a lower energy state, emitting a photon with a wavelength of 550 nm. This decrease in energy corresponds to the difference in energy levels between the initial and final states of the electron transition. The energy of the photon is inversely proportional to its wavelength, so a longer wavelength photon corresponds to lower energy.
The higher an electromagnetic wave frequency the lower its?
wavelength. This is because frequency and wavelength have an inverse relationship, meaning as frequency increases, wavelength decreases. This relationship is described by the equation speed = frequency x wavelength, where speed is the speed of light in a vacuum.
How do the wavelength of radiant energy vary with the temperature of the radiating source how does this effect solar terrestrial radiation?
The wavelength of radiant energy emitted by a source is inversely related to its temperature, described by Wien's displacement law; as the temperature increases, the peak wavelength of the emitted radiation decreases. This means hotter objects emit shorter wavelengths, moving from infrared toward visible light. In terms of solar-terrestrial radiation, the Sun, with a surface temperature of about 5,500°C, emits primarily in the visible spectrum, while the Earth, with a much lower temperature, emits infrared radiation. This difference is crucial for understanding how solar energy is absorbed and re-radiated by the Earth, influencing climate and energy balance.
The apparent change in the frequency of a sound emitted by a moving object as it passes a stationary abserver?
The apparent change in the frequency of a sound emitted by a moving object as it passes a stationary observer is called the Doppler effect. As the object moves towards the observer, the observer perceives a higher frequency (higher pitch) than what is actually emitted. Conversely, as the object moves away from the observer, the perceived frequency is lower than the actual frequency emitted.
