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TRB MODEL QUESTIONS FOR PHYSICS

TRB Model Questions
31. Which one of the following is an insulator?
 
  • A. silver
  • B. glass
  • C. copper
  • D. aluminium
 
32. The periscope is used in
 
  • A. ship
  • B. aerospace
  • C. aeroship
  • D. submarine
 
 
33. The fuse wire is made of
 
  • A. tungsten
  • B. copper
  • C. lead–tin alloy
  • D. nichrome
 
34. Wave theory was proposed by
 
  • A. Young
  • B. Newton
  • C. Huygen
  • D. Raman
 
35. The unit of power of a lens is
 
  • A. pascal
  • B. decibel
  • C. stoke
  • D. diopter