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Modern Physics Test 2 Online MCQs

Test Name Modern Physics Test 2
Subject Physics
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
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Get the knowledge of Modern Physics in the form of multiple choice questions Test for the recruitment test, all admission test, mock quiz, MCAT and engineering test preparation.

Modern Physics Test 2 Online MCQs

Physics

1. Photo electric effect supports the quantum nature of light because

Question 1 of 15

2. If the ionisation energy for hydrogen atom is 13.6 eV. The energy required to excite it from the ground state to the next higher state is nearly

 

Question 2 of 15

3. In photoelectric effect, the photoelectric current

Question 3 of 15

4. Which of the following makes use of photoelectric effect?

 

Question 4 of 15

5. Ultraviolet radiations of 6.2 eV falls on an aluminium surface (work function 4.2 eV). The kinetic energy in joule of the fastest electron emitted is approximately

 

Question 5 of 15

6. For the first member of Balmer series of hydrogen spectrum, the wavelength is λ. What is the wavelength of the second member?

 

Question 6 of 15

7. The study of photoelectric effect is useful in understanding

Question 7 of 15

8. Ionisation energy for hydrogen atom in the ground state is E. What is the ionisation energy of Li⁺⁺atom in the 2nd excited state?

 

Question 8 of 15

9. Which one of the following is incorrect statement about a photon?

Question 9 of 15

10. The momentum of the photon is given by

 

Question 10 of 15

11. In photoelectric effect, the current

Question 11 of 15

12. The frequency and intensity of the incident beam of light falling on the surface of photoelectric material is increased by a factor of two. This will

 

Question 12 of 15

13. Blue light can cause photoelectric emission from a metal, but yellow light cannot. If red light is incident on the metal, then

 

Question 13 of 15

14. A photosensitive material would emit electrons if excited by photons beyond a threshold. To cross the threshold you would increase

 

Question 14 of 15

15. Photoelectrons are being obtained by irradiating zinc by a radiation of 3100 Å. In order to increase the kinetic energy of ejected photoelectrons

 

Question 15 of 15


 

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