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Physics Questions and Answers

109. Boyle’s law states the relationship between
 
  • A. pressure and temperature
  • B. pressure and volume
  • C. volume and temperature
  • D. pressure and density
 
 
110. A device used for measuring the depth of the sea is called
 
  • A. Hydrometer
  • B. Manometer
  • C. Altimeter
  • D. Fathometer
 
111. The source of sun’s radium energy is
 
  • A. Nuclear fission
  • B. Magnetic traps
  • C. Cosmic radiations
  • D. Nuclear fusion
 
112. A periscope works by the principle of
 
  • A. diffraction
  • B. refraction only
  • C. reflection and interference
  • D. reflection and refraction