Physical quantities - class-XI
Description: physical quantities | |
Number of Questions: 78 | |
Created by: Darshan Khurana | |
Tags: motion and measurement nature of the physical world and measurement measurement of physical quantities measurement and measuring instrument physical world and measurement physics dynamics - explaining motion units and measurement physical quantities and measurement |
Metre is the SI unit of
Pressure is a standard unit of time.
Quantity of matter contained in a body is ....................... .
Knot is a measure of:
Which one of the following does not have unit of force per unit area:
The base quantity among the following is:
If $L = \left( {20 \pm 0.01} \right)m$ and $B = \left( {10 \pm 0.02} \right)m$ then $\dfrac{L}{B}$ is
Gauss is the unit of -
Debye is a unit of
Which are SI units of mass,
The CGS unit of energy is the dye.
Which quantities are measured in the same unit?
Watt-hour measures
Maxwell is the unit of
Find out the odd one from the given options.
Read the following statements carefully and pick out the correct choice of answer.
A: Electromotive force is expressed in Newtons.
B: Electric intensity is expressed in ${ VC }^{ -1 }$.
Read the following statements carefully and pick out the correct choice of answer.
A: Susceptibility is expressed as ${ Am }^{ -1 }$.
B: Magnetic flux is expressed ${ JA }^{ -1 }$.
India adopted metric system of units in
Henry is the unit of
SI units were introduced in
$\displaystyle kg{ ms }^{ -1 }$ is the SI unit of
Velocity gradient is defined as "change in velocity per unit distance". Then its unit in F.P.S. system is ____ .
Light travels at maximum speed in-
What is the full form of S.I. in S.I. system?
Standard of unit is reproducible.
The unit of magnetic field is?
SI Unit of intensity of light is:
Which of the Quantity consists of unit as kg-m/sec ?
What is the approximate diameter of human hair?
The unit kg $m^2s^{-2}$ is associated with
Unit of power in S.I. system is
The 'rad' is the correct unit used to report the measurement of
Which of the following statements below should be followed while using the symbol for a unit of a physical quantity?
In CGS system, units of density is
Unit of heat in S. I. system
1 Kilocalorie $=$ ..................... joules.
Which of the following is not a characteristic of the standard unit?
In the SI system, the unit of temperature is:
The dimensions of $\varepsilon _0\frac {d \Phi _E }{ dt} $ is (where symbols has their usual meaning)
The measure of motion of a body is
Unit of magnetic moment is
Ampere-hour is the unit of :
In S.I . system value of G is ......${ Nm }^{ 2 }/{ kg }^{ 2 }$
$SI$ unit of strain is
What is the $SI$ unit of permeability?
The unit of ${Iq}{Z}$ is:
If E and H represent electric field and magnetic field intensity respectively, then E/H has unit of
Express 100 K in $^0C$
Which of the following is not a unit of heat energy?
Which of the following is not the unit of surface tension ?
The Vander waal's equation for gas is given by $\left (P + \dfrac {a}{V^{2}}\right )(V - b) = RT$ where $P$ is pressure, $V$ is volume $'a'$ and $'b'$ are constants, $R$ is universal gas constant and $T$ is absolute temperature. Then the units of $'a'$ are
Acceleration is defined as the rate of change of velocity. Unit of rate of change of acceleration is:
To express all the physical quantities in SI units, we need
Which of the following quantity is unitless ?
In a system of units, the units of mass, length and time are called pail, jack, and jill. 1 pail = 5 kg, 1 m = 5 jacks and 24 s make 1 jill. What are the unit of density and speed in the new system?
The value of $\displaystyle G=6.67\times { 10 }^{ -11 } N \ { m }^{ 2 } kg^{ -2 } and \ g={ 9.8ms }^{ -2 }$, what is the unit of g/G in C.G.S system?
The SI unit of weight is.
The magnitude of a physical quantity consists of
If kg $m^2s^2$ represents 'x' and g $cm^2s^2$ represents 'y', then find the ratio of x to y.
Which of the following unit is different from other:
$Weber/{m^2}$ =
1 Nanometer = ?
Accuracy of a measurement is determined by :
65 mm is equivalent of approximately:
What is number of significant figures in $0.310\times 103$ ?
One Femto is equal to :
SI unit of Angle is Steradian?
Pascal is unit of which of the following quantity?
Which of the two have same dimensions ?
Which of the following pairs of physical quantities have same dimensions?
Which one of the following is not a derived unit?
Which of the following statements is incorrect regarding mass. ?
Which of the following is unitless quantity?
An atmosphere:
In a screw gauge, 5 complete motations of the screw cause it to a linear distance of 0.25 cm. There are 100 circular scale divisions. The thickness of a wire measured by this screw gauge gives a reading of 4 main scale divisiors and 30 circular scale divisions. Assuming negligible zero, the thickness of the wire is:
Assuming the length of the day uniformly increases by $0.001$ second per century. The net effect on the measure of time over $20$ centuries is?