51.  Which of the following physical quantity is fundamental ?

52.  Poise is the unit of

53.  Which unit of physical quantity remains same for all unit system ?

54.  Which of the following system of unit is not based on only units of mass length and time.

55.  Which of the following symbol of unit does not follow practical norms for the use of SI system ?

56.  Why derive luminous intensity symbol form of SI system ?

57.  What is the ratio of 10 micron to 1 nanometer ?

58.  

59.  If value of gravitational constant in MKS is then value of G in CGS = ______

60.  A particle has an acceleration of find acceleration in SI system.