51) Nuclear sizes are expressed in a unit named
a)Fermi
b)Angstrom
c)Newton
d)Tesla
52) Product of Force and Velocity is called:
a) Work
b) Power
c) Energy
d) Momentum
53) Pa(Pascal) is the unit for
a) thrust
b) pressure
c) frequency
d) conductivity
54) What is the unit of Astronomical Distance ?
a) Light year
b) Angstrom
c) Weber
d) Lux
55) Which instrument is used to measure the power of electric circuit ?
a)Voltmeter
b)Wattmeter
c)Wavemeter
d)Viscometer
56) An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?
a) Angular Momentum
b) Linear Velocity
c) Angular Displacement
d) None of these
57) What is the scale used for measuring the intensity of the earthquake?
a) Metric Scale
b) Quake Scale
c) Richter Scale
d) Epicentre Scale