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Physics Questions and Answers

TRB Model Questions
 
9. Joule is the unit of
 
  • A. Temperature pressure
  • B. Heat
  • C. Energy
  • D. Power
Answer: B.
Heat
 
10. Who among the following invented the steam engine?
 
  • A. Wright Brothers
  • B. Thomas Savery
  • C. Marconi
  • D. James Watt
Answer: D.
James Watt
 
 
11. The volatile liquid used in refrigerator is
 
  • A. Water
  • B. Helium
  • C. Acetone
  • D. Freon
Answer: D.
Freon
 
12. The SI unit of power of a lens is
 
  • A. Watt
  • B. Calories
  • C. Metre
  • D. Dioptre
Answer: D.
Dioptre