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Q: What measures the exact frequency of the light emitted when an electron changes levels?
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What measures the exact frequency of the light emitted when an electron changes levels.?

spectroscope


How is the change in electron energy related to the frequency of light emitted in electron transitions?

Its right in the book (in bold) and has a key next to it.


Why frequency of light never change when light changes medium?

When light enters another medium it changes speed, but thewavelength changes correspondingly so that the frequency does not change. For example, if light enters a medium where its speed is cut in half, then the wavelength will also be reduced by half.


Does photoelectric effect take place below threshold frequency?

The threshold frequency for photoelectric emission is the smallest possible frequency a photon can have to be absorbed/emitted by an electron moving between energy levels in an atom. Explanation: Since electrons can't exist /between/ energy levels, and each electron would be moved a very specific amount by any given photon, only photons of certain frequencies can be properly absorbed/emitted, necessitating a minimum frequency.


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?

electron lost 3.6 x 10-19 -barbie=]


A beta particle is a what created and emitted from an unstable nucleus?

NovaNet: A beta particle is simply a high speed electron.


Is it possible to create an EM wave with a frequency that changes e.g increases or decreases over time?

No. The frequency of an EM wave depends only on the source, and cannot be altered once it has been emitted.


When a neutron decays into a proton the electron is emitted from the nucleus what is this kind of radioactivity called?

If an electron is released from the nucleus (and not from an electron shell) then it would have been emitted by a neutron in beta decay. In beta-minus decay, a neutral neutron emits an electron and an anti-neutrino and becomes a proton; in beta-plus decay, a proton emits a positron and a neutrino and becomes a neutron.


Doppler effect with two people moving to each other?

In this case, the frequency of a wave emitted by one person would increase (be perceived as having a higher frequency) by the other.In this case, the frequency of a wave emitted by one person would increase (be perceived as having a higher frequency) by the other.In this case, the frequency of a wave emitted by one person would increase (be perceived as having a higher frequency) by the other.In this case, the frequency of a wave emitted by one person would increase (be perceived as having a higher frequency) by the other.


Is radioactive decay an electron?

No. An electron may be emitted in some cases, though.


What is emitted by an atom as a result of electron capture?

After electron capture a neutrino is released.


What particle is emitted when Na-20 decays to Ne-20?

A positive electron (positron) is emitted.