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Physics Questions and Answers

General Science
69. Aeroplane was invented by
 
  • A. Volta
  • B. Nicolas
  • C. Orville and Wilbur Wright
  • D. Ampere
 
 
70. Light years is the unit of
 
  • A. weight
  • B. intensity of light
  • C. distance
  • D. time
 
71. Who proposed the wave theory of light
 
  • A. Huygens
  • B. Newton
  • C. Foucault
  • D. Michelson
 
72. Electronic devices that converts D.C. Power into A.C. power are called
 
  • A. transformers
  • B. inverters
  • C. converters
  • D. rectifiers