Physics
Measusrement
Page 11 of 28
#81 For $Z=\frac{A}{B}$, percentage error in $Z$ is approximately:
A) sum of % errors in $A$ and $B$
B) difference of % errors
C) product of % errors
D) zero
#82 If $y=x^{n}$, then $\frac{\Delta y}{y} = $
A) $n\,\frac{\Delta x}{x}$
B) $\frac{\Delta x}{nx}$
C) $n^{2}\frac{\Delta x}{x}$
D) $\frac{1}{n}\frac{\Delta x}{x}$
#83 Order of magnitude of $3.6\times10^{7}$ is:
A) $10^{6}$
B) $10^{7}$
C) $10^{8}$
D) $10^{5}$
#84 $1\ \text{eV}$ in joules is approximately:
A) $1.6\times10^{-19}$
B) $1.6\times10^{19}$
C) $9.1\times10^{-31}$
D) $6.63\times10^{-34}$
#85 $1\ \text{atm}$ equals approximately:
A) $1.01\times10^{5}\ \text{Pa}$
B) $1.01\times10^{3}\ \text{Pa}$
C) $9.8\ \text{Pa}$
D) $10^{6}\ \text{Pa}$
#86 One micrometer equals:
A) $10^{-3}\ \text{m}$
B) $10^{-6}\ \text{m}$
C) $10^{-9}\ \text{m}$
D) $10^{-2}\ \text{m}$
#87 Check $v=\sqrt{gh}$ by dimensions. It is:
A) dimensionally consistent
B) dimensionally inconsistent
C) incorrect unit
D) none
Page 11 of 28
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