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TRB MODEL QUESTIONS FOR PHYSICS

TRB Model Questions
26. Who discovered x–ray?
 
  • A. Einstein
  • B. J.J.Thomson
  • C. Roentgen
  • D. Madam Curie
 
27. X–rays cannot pass through
 
  • A. bone
  • B. wood
  • C. flesh
  • D. glass
 
 
28. Television was discovered by
 
  • A. Bohr
  • B. Becquerrel
  • C. J.L.Baird
  • D. Bhaba
 
29. Mechanical energy is converted into electrical energy in a
 
  • A. motor
  • B. generator
  • C. loud speaker
  • D. microphone
 
30. Electrolytes are usually in the form of
 
  • A. gases
  • B. plasma
  • C. liquids
  • D. gases