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Ch.6 - Electronic Structure of Atoms
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.6 - Electronic Structure of Atoms문제 88a
6장, 문제 88a

In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of radiation hitting a metal surface. She obtains the following plot. The point labeled 'n0' corresponds to light with a wavelength of 542 nm. (a) What is the value of n0 in s - 1?
Graph showing electron kinetic energy vs frequency, with point 'n0' at 542 nm wavelength.

검증된 단계별 안내
1
Identify the given wavelength (λ) of light, which is 542 nm.
Convert the wavelength from nanometers to meters by multiplying by 10^-9.
Use the speed of light equation, c = λν, where c is the speed of light (3.00 x 10^8 m/s), λ is the wavelength in meters, and ν is the frequency in s^-1.
Rearrange the equation to solve for the frequency (ν): ν = c / λ.
Substitute the values for c and λ into the equation to find the frequency ν.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Photoelectric Effect

The photoelectric effect refers to the phenomenon where electrons are emitted from a material (usually a metal) when it is exposed to light of sufficient frequency. This effect demonstrates the particle nature of light, as photons must have enough energy to overcome the work function of the material to eject electrons.
추천 영상:
가이드 코스
02:31
Photoelectric Effect

Frequency and Wavelength Relationship

The frequency (ν) and wavelength (λ) of electromagnetic radiation are inversely related through the equation c = νλ, where c is the speed of light. This means that as the wavelength increases, the frequency decreases, and vice versa. Understanding this relationship is crucial for converting the given wavelength of light into frequency for calculations.
추천 영상:
가이드 코스
00:31
Frequency-Wavelength Relationship

Kinetic Energy of Ejected Electrons

The kinetic energy (KE) of ejected electrons in the photoelectric effect can be calculated using the equation KE = hν - φ, where h is Planck's constant, ν is the frequency of the incident light, and φ is the work function of the metal. This relationship highlights how the energy of the incoming photons is converted into the kinetic energy of the emitted electrons.
추천 영상:
가이드 코스
00:34
Kinetic & Potential Energy
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