In a photoelectric experiment for 4000 Å incident radiation…

Physics Electron, Photon, Photoelectric Effect and X-rays Photon and Photoelectric Effect MCQ (Single Correct)

In a photoelectric experiment for 4000 Å incident radiation, the potential difference to stop the ejection is 2 V. If the incident light is changed to 3000 Å, then the potential required to stop the ejection of electrons will be

2 V

Less than 2 V

Zero

Greater than 2 V

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The correct answer is:

According to Einstein's photoelectric equation

Hence if decreases increases

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