Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?
(A) Sum of their absolute uncertainties
(B) The difference of their absolute uncertainties
(C) The product of their absolute uncertainties
(D) Division of their absolute uncertainties
An ideal standard of measurement of a base quantity has characteristics_______________?
(A) Accessible
(B) Invariable
(C) Transportable
(D) Only a and b are correct
Steradian is the SI unit of________________?
(A) Plane angle
(B) Solid angle
(C) Both plane angle and solid angle
(D) Neither plane angle nor solid angle
The rotational K.E of the hoop is equal to the______________?
(A) its translational K.E
(B) half than its translational K.E
(C) double than its translational K.E
(D) four times than its translational K.E
Which of the following is not a correct representation method for prefixes______________?
(A) 1mm
(B) 10km
(C) 1000um
(D) Both A and B
The number 76.85 is rounded off up to two significant figures as_____________?
(A) 76.8
(B) 77
(C) 76.9
(D) None of these
The number of significant figures in the length of a bar 6200mm measured by meter rod is_______________?
(A) 4
(B) 3
(C) 2
(D) None of these
To reduce the uncertainty in the timing experiment______________?
(A) Highly precise instrument
(B) Conduct at room temperature
(C) Count number of vibration
(D) Both a and C
In multiplication and division of measurement______________?
(A) Percentage uncertainties are added
(B) Absolute uncertainties are added
(C) Percentage uncertainties are divided
(D) Absolute uncertainties are divided