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Physics Questions and Answers

General Science
33. Magnetron is used for the production of
 
  • A. X–rays
  • B. Cathode rays
  • C. Microwaves
  • D. Positive rays
 
 
34. The electric device with thermostat is
 
  • A. radio
  • B. electric bulb
  • C. fan
  • D. iron box
 
35. The fuse of wire is made of
 
  • A. nichrome
  • B. led–tin alloy
  • C. tungsten
  • D. copper
 
36. The lowest level energy band in a solid is called
 
  • A. valence band
  • B. conduction band
  • C. fermi level
  • D. equal level