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Give two examples of photoelectric cells and explain how they work?
The most common photoelectric cells consist of two electrodes separated by light sensitive semiconductor material. A high voltage source, such as a battery, is connected to the electrodes set up a current even in the absence of light. When light strikes the semiconductor material in the photocell, current in the circuit increases in proportion to the intensity of the light. The current from a photoelectric cell is often used to operate switches or relays, so are often used in automatic door openers and intrusion alarms. This type of photoelectric cells are called electric eyes.
Is the effect nearer to the source of the ammonia or the source of the hydrogen chloride pad?
The effect would be nearer to the source of the hydrogen chloride pad, as ammonia and hydrogen chloride react instantly upon contact to form ammonium chloride. This reaction occurs locally, leading to irritation or harm in the surrounding area near the pad.
What type of mixture produces the Tyndall effect?
Colloids produce the Tyndall effect. This effect occurs when light scatters as it passes through the colloidal particles in the mixture, making the colloid appear opaque or cloudy when viewed under a light source.
What is exclusively a natural source of carbon dioxide?
Volcanoes are an exclusively natural source of carbon dioxide, releasing the gas during eruptions. This carbon dioxide can contribute to the greenhouse effect and affects the Earth's climate.
How can one determine the heat capacity of a calorimeter?
To determine the heat capacity of a calorimeter, one can perform a calibration experiment using a known heat source, such as a substance with a known heat capacity. By measuring the temperature change in the calorimeter when the known heat source is added, the heat capacity of the calorimeter can be calculated using the formula Q mcT, where Q is the heat energy transferred, m is the mass of the substance, c is the specific heat capacity, and T is the temperature change.
If you are running a photoelectric effect experiment which adjustment might cause more current to flow?
Switching to a brighter light source. Switch to a light source with a higher intensity.
Is solar power a clean power source?
Yes, solar power is a clean power source. It produces no waste products due to running off of the photoelectric effect.
Can we get photons from uv rays to perform photoelectric effect at night?
Yes, but not from the sun. At night, you'd need an artificial source of UV, such as a "black light".
If you are running a photoelectric effect experiment and your light source cannot create an electric current which adjustment might cause an electric current to flow?
Increasing the intensity of light or using a shorter wavelength light source can cause an electric current to flow in a photoelectric effect experiment. The energy of the photons should be increased to overcome the work function of the metal surface, allowing electrons to be ejected and generate a current.
Are all metals useful for photo electric effect?
The photoelectric effect can be demonstrated using any metal. But for some ofthem, you might have to come up with a source of inconveniently-high-energyE&M radiation in order to demonstrate it.
What must happen in order for the photoelectric effect to occur?
A metal of a certain ionization potential.A light source that provides light of that exact energy potential.a circuit that has all the other components needed.
In the phenomenon known as the Doppler Effect electrons are ejected when light shines on certain substances?
The Doppler Effect is the change in the frequency of the sound you hear when a car sounding its horn passes you.When the electrons at the surface of an object absorb incident light sufficient for them to escape the surface this is known as the photoelectric effect.
How you could determine whether the source of the text is reliable and unbiased?
Please have a look at the related question below.
Why would you ask where and when a source was published who wrote it and whether it was fact-checked?
to determine a sources credibility ~ apex
In the Photoelectric effect after the threshold frequency what effect does the increased frequency have on the photocurrent If you assume the Intensity of the source to be constant?
The increased frequency increases the kinetic energy of the single electron ejected. Remember that the incident light releases a single electron when the threashod frequency is reached
The blank effect allows us to use the spectrum to study a source's motion?
The Doppler effect allows us to use the spectrum to study a source's motion. This effect causes a shift in the wavelengths of light emitted by a moving source, which can be detected and used to determine the direction and speed of the source's motion relative to the observer.
Suppose that you are trying to determine whether a secondary source is valid. What information about the source's creator would be most helpful to you?
Answer this question… The author's area of expertise
