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The time taken by a photoelectron to com...

The time taken by a photoelectron to come out after the photon strikes is approximately

A

`10^(-1)s`

B

`10^(-4)s`

C

`10^(-10)s`

D

`10^(-16)s`

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The correct Answer is:
To solve the question regarding the time taken by a photoelectron to come out after a photon strikes, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Photoelectric Effect**: The photoelectric effect occurs when light (photons) strikes a metal surface and causes the emission of electrons (photoelectrons). The phenomenon is instantaneous once the conditions are met. **Hint**: Recall that the photoelectric effect is a key concept in quantum physics, where light behaves as particles (photons). 2. **Factors Affecting Photoelectron Emission**: The emission of photoelectrons depends on the intensity and frequency of the incident light. However, the time taken for the photoelectron to be emitted is independent of these factors. **Hint**: Consider how intensity and frequency influence the number of emitted electrons but not the time to emit. 3. **Threshold Frequency**: For photoelectrons to be emitted, the frequency of the incident light must be greater than a certain threshold frequency specific to the material. This is the minimum energy required to release an electron from the metal surface. **Hint**: Remember that the threshold frequency is a crucial parameter in determining whether photoelectric emission will occur. 4. **Instantaneous Phenomenon**: Experimental observations indicate that the emission of photoelectrons happens almost instantaneously once the photon strikes the surface, provided the frequency condition is satisfied. **Hint**: Think about the speed of light and the interaction at the atomic level when considering the instantaneous nature of the effect. 5. **Time Taken for Emission**: The time taken for a photoelectron to be emitted is approximately \(10^{-10}\) seconds. This value is a constant and does not change with different light intensities or frequencies. **Hint**: Familiarize yourself with the order of magnitude of time scales in atomic physics, as this will help you understand the rapidity of the process. ### Final Answer: The time taken by a photoelectron to come out after the photon strikes is approximately \(10^{-10}\) seconds.
To solve the question regarding the time taken by a photoelectron to come out after a photon strikes, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Photoelectric Effect**: The photoelectric effect occurs when light (photons) strikes a metal surface and causes the emission of electrons (photoelectrons). The phenomenon is instantaneous once the conditions are met. **Hint**: Recall that the photoelectric effect is a key concept in quantum physics, where light behaves as particles (photons). ...
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