1 N =
(a) kg m s^-2
(b) kg m^2 s-3
(c) kg m^2 s^-3
(d) kg m^-1 s^-2
N-m=
(a) kg m^2 s^-2
(d) kg m^2 s-2
(a) kg m^-1 s^-2
(b) kg m s^-2
1 W=
(a) N-m
(b) Js^-1
(c) kg m’s2
(d) kgms2
1 A=
(a) C/s
(b) J/s
(c) N/s
(d) W/s
Numbers are expressed in standard form called scientific notation, which employs powers of _______.
(a) 10
(b) 20
(c) 30
(d) 40
Which of the following units has the symbol with initial capital letter?
(a) Kilogram
(b)Meter
(c) Ampere
(d)Radian
1×10^12 m =
(a) 1 pm
(b) 1 nm
(c) 1 cm
(d) 1 dm
Prefix femto (f) stands for ___________.
(a)10^-18
(b)10^-15
(c) 10^-12
(d)10^9
Prefix 10^-1 stands for
(a) micro
(b) milli
(c) centi
(d) deci
1 Gm =
(a) 1x10m
(b) 1×10^6m
(c) 1×10^9m
(d)1×10^12m
1 Em=
(a) 1 exameter
(b) 1 petameter
(c) 1 terameter
(d) 1 gigamcter
1 MMm is better represented as __________.
(a) 1 Mm
(b) 1 Gm
(c) 1 Tm
(d) 1 Pm
1 uF is better represented as_________.
(a) 1nF
(b) 1pF
(c) 1fF
(d) 1 aF
7.0×10 dm may be expressed in scientific notation as __________.
(a) 7.0×10^4m
(b) 7.0×10^5m
(c) 7.0×10^6m
(d) 7.0×10^7m
1 cm^2=
(a)1×10^-1 m^2
(b)1×10^-2 m^2
(c) 1×10^-3 m^2
(d)1×10^-4 m^2
Micrometer screw gauge should be calibrated in _______.
(a)mm
(b)m
(c)km
(d) pm
The error may occur due to ___________________.
(a) Negligence of a person
(b) Faulty apparatus
(c) Inappropriate technique
(d) All of these
If repeated measurements of a quantity give different values under the same conditions, the error is said to be ______________.
(a) Random
(b) Systematic
(c) Automatic
(d) None of these
The effect of random error can be reduced by repeating the measurement several times and taking ____________.
(a) Square
(b)Square root
(c) Average
(d) Laplace
If all measurements of a particular quantity are influenced by an effect equally, the error is said to be ____________.
(a) Random
(b) Systematic
(c) Automatic
(d)None of these
Which error produces a consistent difference in readings?
(a) Random
(b) Systematic
(c) Automatic
(d) None of these
The possible cause of a systematic error is _____________.
(a) Zero error of instrument
(b)Poor calibration of instrument
(c) Incorrect marking of instrument
(d) All of these
The possible cause of a systematic error is
(a) Zero error of instrument
(b) Poor calibration of instrument
(c) Incorrect marking of instrument
(d) All of these
For which error, a correction factor can be applied?
(a) Random
(b)Systematic
(c) Automatic
(d) None of these
One year=
(a) 5×10^17s
(b) 1.4×10^17s
(c) 3.2×10^7s
(d) 8.6×10^4s
One day=
(a) 5×10^7s
(b) 1.4×10^7s
(c) 3.2×10^7s
(d) 8.6×10^4s
The internationally accepted scientific notation for 134.7 is ____________.
(a) 0.1347×10^3
(b) 1.347×10^2
(c) 13.47×10^1
(d) 134.7×10^0
The internationally accepted scientific notation for 0.0074 is___________.
(a) 0.074×10^-1
(b) 0.74×10^-2
(c) 7.4×10^-3
(d) 74×10^-4
The length of a line is recorded to be 13.5 cm with the help of a meter rod calibrated in millimeters, the maximum uncertainty is ________.
(a)+0.05cm
(b)-0.05cm
(c)±0.05cm
(d)±0.1cm
In any measurement, the accurately known digits and the first doubtful digit are called ___________.
(a) Systematic error
(b) Significant figure
(c) Uncertainty
(d) Accuracy
The accuracy of a measurement can be indicated by ___________.
(a) Number of significant figures
(b) Stated uncertainty
(c) Both of them
(d) None of these
70000 has number of significant figures equal to_____________.
(a) 0
(b) 1
(c) 4
(d) 5
0.0000747 has number of significant figures equal to ____________.
(a) 8
(b) 7
(c) 4
(d) 3