Physics MCQs

Page No. 33

One pico stands for_________________?


a10 raised to power -15


b10 raised to power -12


c10 raised to power -9


d10 raised to power -6



Which one is the highest power multiple ?


aGiga


bBeta


cMega


dDeca


View Answer Giga

Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?


aSum of their absolute uncertainties


bThe difference of their absolute uncertainties


cThe product of their absolute uncertainties


dDivision of their absolute uncertainties



An ideal standard of measurement of a base quantity has characteristics_______________?


aAccessible


bInvariable


cTransportable


d Only a and b are correct



Steradian is the SI unit of________________?


a Plane angle


bSolid angle


cBoth plane angle and solid angle


dNeither plane angle nor solid angle


View Answer Solid angle

Absolute uncertainty in a measurement depends upon______________?


aThe magnitude of the measurement


bLeast count of the instrument


cPercentage error in the measurement


dAll of a, b and C



Three students measured the length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is a correct record ?


aOnly (i)


bOnly (ii)


cOnly (iii)


dBoth (i) and (ii)


View Answer Only (iii)

SI unit of the coefficient of viscosity is___________________?


aKg.m.S-1


bKg m-1.S-1


cKg.m.S


dKg-1.m-1.S-1


View Answer Kg m-1.S-1Kg.m.S

Which equation is not dimensionally correct ?


aE=mc2


bVf=Vi+at


cS=Vt2


dS=1/2at2


View Answer S=Vt2

Dimensional analysis is helpful for__________________?


aDeriving a possible formula


bChecking the homogeneity of a physical equation


cVerification of laws


dOnly A and B are correct



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