Q.51)-A seconds pendulum is a pendulum whose time period is-----
  • 1 sec
  • 4 sec
  • 3 sec
  • 2 sec
Q.52)-What is the motion which repeats itself after regular intervel of time?
  • Periodic Motion
  • Simple Harmonic Motion
  • Undamping Motion
  • Vibratory Motion
Q.53)-______ are used for communication in artificial satellites.
  • Infrared waves
  • Radio waves
  • Ultraviolet rays
  • Amplitude Modulation waves
Q.54)-What is the distance between a crest and a consecutive trough in a transverse wave?
  • Wavelength
  • Amplitude
  • Half of the wavelength
  • Twice of wavelength
Q.55)-Which one of the following is not a property of electromagnetic waves?
  • Electromagnetic waves do not show interference and diffraction
  • Oscillating electric field and magnetic field are perpendicular to each other
  • Electromagnetic waves are transverse waves
  • Electromagnetic waves do not require a medium to propagate
Q.56)-The time taken by a pendulum to complete one oscillation is called its?
  • Maximum speed
  • Average speed
  • Time period
  • Time interval