Physics GK Questions and Answers

5. Which one of the following is the unit of activity of a radioactive source?
  A.  Tesla
  B.  Lux
  C.  Becquerel
  D.  Siemens
Answer
Ans: C
Becquerel
6. Core of transformer is made up of
  A.  Steel
  B.  Aluminium
  C.  Copper
  D.  Soft iron
Answer
Ans: D
Soft iron
7. Light year is the unit of
  A.  Time
  B.  Mass
  C.  Intensity of light
  D.  Distance
Answer
Ans: D
Distance
8. The unit of work is
  A.  Newton
  B.  Joule
  C.  Dyne
  D.  Watt
Answer
Ans: B
Joule
1 2345

Page 2 of 5