Measurements

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                     Measurements


31.  Which one is the derived quantity in SI units?
A. electric currentB. electric charge
C. plane angleD. amount of substance
32.  Which one is the correct representation of the unit of pressure?
A. Newton/Meter2B. newton/meter2
C. Newton/meter2D. newton/Meter2
33.  Which one is the dimensionally correct equation?
A. f=vtB. S=Vit+1/2at2
C. V=StD. V=f/t
34.  Zero error of the instrument is a type of
A. random errorB. personal error
C. systematic errorD. classified error
35.  In multiplication and division of measurement
A. percentage uncertainties are addedB. absolute uncertainties are added
C. percentage uncertainties are dividedD. absolute uncertainties are divided
36.  The number of significant figures in 5.400 are
A. threeB. five
C. twoD. none
37.  To reduce the uncertainty in the timing experiment
A. highly precise instrumentB. conduct at room temperature
C. count more number of vibrationD. both a and c
38.  The unmber of significant figures in the length of a bar 6200mm measured by meter rod are
A. fourB. three
C. twoD. none of these
39.  The number 76.85 is rounded off upto two significant figures as
A. 76.8B. 77
C. 76.9D. none of these
40.  Which of the following is not a correct representation method for prefixes
A. 1mmB. 10km
C. 1000umD. both (a) and (b)
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