Free tnpsc model questions Online Test - MeritNotes

No. of Questions :10
Remaining Time :
1. Who propounded the special theory of relativity?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

2. At the threshold frequency, the velocity of the electrons is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

3. The photoelectric effect can be explained on the basis of
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

4. Maximum kinetic energy of photo electrons varies linearly with _____ of incident radiation.
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

5. Who discovered photoelectric effect?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

6. Who applied quantum theory of radiation to photoelectric effect?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

7. Photon is a
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

8. Which of the following theories explains photoelectric effect?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

9. Electron beam operates in _____ medium.
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 

10. In electron microscope, the electron beam emitted by the filament is accelerated through a large potential difference in a device called
 
  • (a) 
  • (b) 
  • (c) 
  • (d)