Tag: units and measurement: error analysis

Question 1

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

Order of $\frac { 1 } { 8 \times 10 ^ { 9 } }$ is:

$1.77\times {{10}^{-10}}$
$1.55\times {{10}^{-10}}$
$1.95\times {{10}^{-10}}$

Reveal answer Fill a bubble to check yourself

Answer

$1.25\times {{10}^{-10}}$

Question 2

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

The resultant of two equal forces acting at right angles to each other is $1414$ dyne. Find the magnitude of either force.

$960$
$1000$
$1200$
$1414$

Reveal answer Fill a bubble to check yourself

Answer

$\dfrac {9}{8}m$

Answer

$\displaystyle \frac { 285 }{ 12.5 } $ and $\displaystyle \frac { 295 }{ 11.5 } $

Question 3

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

A particle is moving with a velocity $35\ m/s$ along positive x-axis.It's acceleration is towards negative X-axis with the magnitude $4m/s^ {2}$ then the distance covered by the particle in the $9th$ second:-

$1m$
$\dfrac {5}{4}m$
$153m$

Reveal answer Fill a bubble to check yourself

Question 4

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

Two constant force $ \overrightarrow F _1 and \overrightarrow F _2 $ acts on a body.these forces displaces the body from point P(1, -2, 3) to Q (2, 3, 7 ) in 2s starting from rest.force $\overrightarrow F _1 $ is of magnitude 9 N and acting along vector $ ( 2 \hat i - 2 \hat j + \hat k ) $ . the positions are in meter. find work done by $ \overrightarrow F _1 $.

$-12J$
$+12J$
$36J$
$-36J$

Reveal answer Fill a bubble to check yourself

Question 5

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

$ 53^0 $
$ 143^0 $
$ 37^0 $
$ 127^0 $

Reveal answer Fill a bubble to check yourself

Question 6

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

The Earth's radius is $6371km$. The order magnitude of the Earth's radius is

$10^3$
$10^2$
$10^7$
$10^5$

Reveal answer Fill a bubble to check yourself

Question 7

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

Find the order of magnitude of the mass of the star, whose radius is $384 \times 10^6$ m and average density is $4 \times 10^3$ kg $m^{-3}$ :

30
29
24
21

Reveal answer Fill a bubble to check yourself

Question 8

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

Round off following number upto four significant figures.

$45.689$

$45.689$
$45.69$
$45.68$
$45.7$

Reveal answer Fill a bubble to check yourself

Question 9

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

Round off 2.0082 to four significant figures.

2.008
2.0082
2.009
2

Reveal answer Fill a bubble to check yourself

Question 10

Multiple choice physics units and measurement: error analysis rounding off digits rounding of digits standard form

On a recent trip, Cindy drove her car 290 miles, rounded to the nearest 10 miles, and used 12 gallons of gasoline, rounded to the nearest gallon. The actual number of miles per gallon that Cindy's car got on this trip must have been between.

$\displaystyle \frac { 290 }{ 12.5 } $ and $\displaystyle \frac { 290 }{ 11.5 } $
$\displaystyle \frac { 295 }{ 12 } $ and $\displaystyle \frac { 285 }{ 11.5 } $
$\displaystyle \frac { 285 }{ 12 } $ and $\displaystyle \frac { 295 }{ 12 } $
$\displaystyle \frac { 295 }{ 12.5 } $ and $\displaystyle \frac { 285 }{ 11.5 } $

Reveal answer Fill a bubble to check yourself

Tag: units and measurement: error analysis

Questions Related to units and measurement: error analysis