Photoelectric Effect

1. According to Planck, E=hf such that E= h x Lambda. True or False?

Question 1 of 18

2. The minimum frequency beyond which no photoelectric emission can occur is called?

Question 2 of 18

3. The Kinetic energy of photoelectrons produced is directly proportional to the energy of radiation. True or False?

Question 3 of 18

4. Mention the functions of photo emissive cells

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5. Explain what happens when an electromagnetic wave of sufficient frequency is irradiated on a metal surface?

Question 5 of 18

6. What is the minimum amount of work energy needed to dislodge an electron from a metal surface?

Question 6 of 18

7. According to Planck, the energy E possessed by one photon is given by:

Question 7 of 18

8. All metals have the same minimum frequency for photo emission. True or False?

Question 8 of 18

9. Explain Light energy and Quantum theory according to Max Planck

Question 9 of 18

10. The amount of energy which is absorbed by an electron on a METAL surface when a photon strikes it varies from one metal to another. True or False?

Question 10 of 18

11. The maximum wavelength beyond which no photoelectric emission can occur is called?

Question 11 of 18

12. Which are the key factors affecting the photoelectric effect?

Question 12 of 18

13. Which of the following is not among the application of photoelectric effect?

Question 13 of 18

14. For emission of photoelectrons to occur from a metal surface it must meet what conditions?

Question 14 of 18

15. Einstein's photoelectric equation is equal to:

Question 15 of 18

16. The no. of photoelectrons produced is directly proportional to the intensity. True or False?

Question 16 of 18

17. Explain Einstein's equation of the photoelectric effect?

Question 17 of 18

18. According to Planck E= h x c/Lambda where h and c are constants then it means that radiation with longer wavelength possess low energy while radiation with shorter wavelength possess high energy?

Question 18 of 18