Physics

physics questions
DIRECTIONS : Questions based on Physics.
1. Which one of the following common devices works on the basis of the principle of mutual induction?
  A.  Tubelight
  B.  Transformer
  C.  Photodiode
  D.  Led
2. Dc current can be controlled by which one of the following components?
  A. Impedance
  B. Resistance
  C. Capacitance
  D. Inductance

3. Mesons are found in
  A.  Alpha -rays
  B.  Laser beam
  C.  X - rays
  D.  Cosmic rays
4. A moderator is used in nuclear reactors in order to
  A.  increase the no.of.neutrons
  B.  decrease the no.of.neutrons
  C.  slow down the speed of neutrons
  D.  Anthony S. D'Mello
5. The wavelength of X-rays is of the order of
  A.  1 cm
  B.  1 m
  C.  10 micron
  D.  1 Angstrom
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