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Recent questions tagged units-and-measurement
Questions
In the following experiment, find the value of the density in g cm$^{-3}$ up to the appropriate significant figures, stating the uncertainty in the value of the density.
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
accuracy-precision-and-errors-in-measurement
difficult
asked
Jul 12, 2014
by
balaji.thirumalai
1
answer
Find the total mass up to the appropriate significant figures of four objects that have the following masses: 1.54 Kg, 3.668 Kg, 5.1278 Kg and 2.5 Kg
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
easy
asked
Jul 12, 2014
by
balaji.thirumalai
1
answer
What is the area of the cross section of the wire up to approximate significant figures if the radius of a uniform wire is 0.021 cms. The value of $\pi$ is given to be 3.142.
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
easy
asked
Jul 12, 2014
by
balaji.thirumalai
1
answer
A man runs 100.5 m in 10.3 seconds. What is his average speed up to approximate significant figures?
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
easy
asked
Jul 12, 2014
by
balaji.thirumalai
1
answer
A bee of mass 0.000087 Kg sits on a flower of mass 0.0123 Kg. What is the total mass supported by the stem of the flower up to the approximate significant figures?
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
easy
asked
Jul 12, 2014
by
balaji.thirumalai
1
answer
The dimensional method cannot be used to obtain the dependence of which of the following?
jeemain
physics
units-and-measurement
class11
ch2
dimensional-formulae-and-analysis
easy
asked
Jul 12, 2014
by
balaji.thirumalai
1
answer
The radius of sphere is measured to be $(2.1 \pm 0.5)$ cms. What is its surface area with error limits?
jeemain
physics
class11
units-and-measurement
ch2
accuracy-precision-and-errors-in-measurement
easy
asked
Jul 11, 2014
by
balaji.thirumalai
1
answer
The velocity v of a particle at time t is given by $v=a+ bt+\large\frac{c}{t+d}$ where a, b, c and d are constants. The dimensions of a, b c and d are respectively
jeemain
physics
class11
units-and-measurement
ch2
dimensional-formulae-and-analysis
medium
asked
Jul 11, 2014
by
balaji.thirumalai
1
answer
Given that the pressure $p$ at a depth $h$ below the surface of a fluid of density $\rho$ is given by $p = \rho gh$, where $g$ is the acceleration due to gravity, which of the following represent the dimensions of pressure?
jeemain
physics
class11
units-and-measurement
ch2
dimensional-formulae-and-analysis
easy
asked
Jul 11, 2014
by
balaji.thirumalai
1
answer
Which of the following is a good predictor of a period $\text{t}$ of a swinging pendulum based on the factors such as Length (l), Angle ($\theta$), the mass (m) and acceleration due to gravity (g)?
jeemain
physics
class11
units-and-measurement
ch2
dimensional-formulae-and-analysis
medium
asked
Jul 11, 2014
by
balaji.thirumalai
1
answer
The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be $21.2\; s$ Suggest method to improve the accuracy of the result.
jeemain
physics
class11
ch2
units-and-measurement
accuracy-precision-and-errors-in-measurement
easy
asked
Jul 11, 2014
by
meena.p
1
answer
The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be $21.2\; s$ . To get more accurate value of g , will more accurate measurement of bob will help ?
jeemain
physics
class11
ch2
units-and-measurement
easy
accuracy-precision-and-errors-in-measurement
concepts
asked
Jul 11, 2014
by
meena.p
1
answer
The length of string of a simple pendulum as measured by a meter scale was found to be 98.2cm. The diameter of the bob was measured by a vernier caliper and it was found to be 3.62cm. The time for 10 oscillations was found to be 21.2 seconds. What is maximum error in the value of g?
jeemain
physics
class11
ch2
units-and-measurement
accuracy-precision-and-errors-in-measurement
asked
Jul 11, 2014
by
meena.p
1
answer
The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be 21.2 s What is the effective length of the pendulum
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
asked
Jul 11, 2014
by
meena.p
1
answer
While measuring the volume of sphere an error of $1.2 \%$ is committed in the measurement of radius. What percentage error is introduced in the measurement of volume ?
jeemain
physics
class11
ch2
units-and-measurement
accuracy-precision-and-errors-in-measurement
asked
Jul 11, 2014
by
meena.p
1
answer
The length and breadth of a rectangular area are 25.2 cm and 16.8 cm respectively and have been measured to an accuracy of 0.1 cm. Find the percentage error in the area .
jeemain
physics
class11
ch2
units-and-measurement
accuracy-precision-and-errors-in-measurement
asked
Jul 11, 2014
by
meena.p
1
answer
The initial and final temperature of water in a container are observed as $15 \pm 0.5^{C}$ and $40 \pm 0.2 ^{\circ}$ what is the rise in temperature ?
jeemain
physics
class11
ch2
units-and-measurement
accuracy-precision-and-errors-in-measurement
asked
Jul 11, 2014
by
meena.p
1
answer
Two resistances $R_1=50 \pm 1\;ohm$ and $R_2=100 \pm 3\;ohm$ are connected in series. Assuming the errors to be limiting error , find the equivalent resistance with error.
jeemain
physics
class11
ch2
units-and-measurement
accuracy-precision-and-errors-in-measurement
asked
Jul 11, 2014
by
meena.p
1
answer
The distance of a point p from a point source of light $S_1$ is $100. 1243\;cm$ and from another point source $S_2$ is $100.1664\;cm$ Find $(S_2P-S_1P)$ and $(S_2P +S_1P)$ correct upto the same number of significant figures.
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
asked
Jul 11, 2014
by
meena.p
1
answer
Find the number of significant figures in the mass difference between a proton and a neutron. Given that mass of a proton $= 1.672649 \times 10^{27}$ mass of a neutron $= 1.674954 \times 10^{-27} kg$
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
asked
Jul 11, 2014
by
meena.p
1
answer
Find the value of the following expression : $\large\frac{5.3 \times 10^4 }{3.3 \times 10^{-2}} +$$ \sqrt { 1.6 \times 10^{12}}$
jeemain
physics
class11
ch2
units-and-measurement
significant-figure
asked
Jul 11, 2014
by
meena.p
1
answer
If the volume of $1.32 \;kg$ of an iron ball is $0.17\;m^3$ find the density.
jeemain
physics
class11
ch2
units-and-measurement
asked
Jul 11, 2014
by
meena.p
1
answer
What is the total length of a line where different segments measure $8.26\;cm,2.3\;cm,2.89\;cm$ and $7.762\;cm?$
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
asked
Jul 11, 2014
by
meena.p
1
answer
$ 0.000070 kg$ of ink is filled in a fountain pen of mass $0.0152 kg$ . What is the total mass of filled fountain pen ?
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
asked
Jul 10, 2014
by
meena.p
1
answer
What is the value of parallactic seconds (parsec) in S.I units?
jeemain
physics
class11
ch2
units-and-measurement
international-system-of-units
asked
Jul 10, 2014
by
meena.p
1
answer
What is the value of a light year in SI Units?
jeemain
physics
class11
ch2
units-and-measurement
international-system-of-units
easy
asked
Jul 10, 2014
by
meena.p
1
answer
The time period of a sample pendulum is to be determined with the help of a stop clock having a least count of $ \large\frac{1}{3}$ seconds. If the estimated time period is about 2 second time for how many oscillations must be recorded so that the periodic time is determined with an error less than $0.67%$
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
medium
asked
Jul 10, 2014
by
meena.p
1
answer
The measured mass and volume of a bosy are $2.42\; g$ and $4.8\; cm^3$ respectively. With possible errors 0.01 g and $0.1 cm^3$ the maximum error in density is about
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
easy
asked
Jul 10, 2014
by
meena.p
1
answer
A cube is of edge $1.2 \times 10^{-2} m$. The volume of cube is
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
asked
Jul 10, 2014
by
meena.p
1
answer
What is the perimeter and area of a rectangle whose length is $6.01$ m and width is $1.2 m$
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
easy
asked
Jul 10, 2014
by
meena.p
1
answer
If the unit of length is x metres in a new system of units (x > 1) then the numerical value of area in the new system of units will be how many times its numerical value in S. I?
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
easy
asked
Jul 10, 2014
by
meena.p
1
answer
Parsec is a unit of
jeemain
physics
class11
ch2
units-and-measurement
easy
measurement-of-length-mass-time
asked
Jul 10, 2014
by
meena.p
1
answer
A fermi is equivalent to
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
easy
asked
Jul 10, 2014
by
meena.p
1
answer
Which of the following is not a unit of time
jeemain
physics
class11
ch2
units-and-measurement
measurement-of-length-mass-time
easy
asked
Jul 10, 2014
by
meena.p
1
answer
The dimensional formula of magnetic flux is:
jeemain
physics
units-and-measurement
class11
ch2
asked
Jul 10, 2014
by
balaji.thirumalai
1
answer
If E is the electric field intensity and $ \mu_0$ is the permeability of free space, then the quantity $\large\frac{E^2}{\mu_0}$ has the dimensions of
jeemain
physics
class11
ch2
units-and-measurement
dimensional-formulae-and-analysis
asked
Jul 10, 2014
by
balaji.thirumalai
1
answer
Light -year is a unit of
jeemain
physics
class11
ch2
units-and-measurement
easy
international-system-of-units
asked
Jul 10, 2014
by
meena.p
1
answer
One micron is equal to
jeemain
physics
class11
ch2
units-and-measurement
international-system-of-units
easy
asked
Jul 10, 2014
by
meena.p
1
answer
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