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becquerel is a ............... unit and its symbol is ...............
$ { 10 \times 10 ^ {-6 } \over 10 ^ {-9}} = 10 ^ 4 $
How many fundamental units are there in SI system ?
In the International System of Units (SI), there are 7 fundamental units. These include meter (m) for length, kilogram (kg) for mass, second (s) for time, ampere (A) for electric current, kelvin (K) for temperature, mole (mol) for the amount of substance, and candela (cd) for luminous intensity.
Which of the following physical quantity is fundamental ?
Time is a fundamental physical quantity. Fundamental quantities are those that do not depend on other quantities and cannot be defined in terms of other physical quantities. The fundamental quantities in the SI system are length, mass, time, electric current, temperature, amount of substance, and luminous intensity.
Poise is the unit of
Poise is the unit of viscosity. Viscosity is a measure of a fluid's resistance to deformation at a given rate, such as when it flows. The poise (symbol: P) is the unit of dynamic viscosity in the centimeter-gram-second (CGS) system of units.
Which unit of physical quantity remains same for all unit system ?
The second is the unit of time and is the same in all unit systems. Time measurement is fundamental and does not change across different unit systems, whereas units like meter, ampere, and kilogram can vary in definition between systems such as the imperial and metric systems.
Which of the following system of unit is not based on only units of mass length and time.
The SI (International System of Units) includes units for additional physical quantities beyond mass, length, and time, such as electric current (ampere), thermodynamic temperature (kelvin), amount of substance (mole), and luminous intensity (candela). This makes it different from systems like MKS (meter-kilogram-second), CGS (centimeter-gram-second), and FPS (foot-pound-second) which are primarily based on just mass, length, and time.
Which of the following symbol of unit does not follow practical norms for the use of SI system ?
Why derive luminous intensity symbol form of SI system ?
The SI unit for luminous intensity is 'candela,' which is abbreviated as 'cd.' Candela is one of the seven base units in the International System of Units (SI). The correct abbreviation is always written in lowercase letters as 'cd'.
What is the ratio of 10 micron to 1 nenometer ?
To find the ratio of 10 microns to 1 nanometer, you need to convert both units to meters first. 1 micron (µm) is $10^{-6}$ meters, and 1 nanometer (nm) is $10^{-9}$ meters. Therefore, the ratio is $ \frac{10 imes 10^{-6}}{10^{-9}} = 10^4 $. Hence, the correct option is $10^4$.
$ { 1 fem to meter \over 100 neno meter } $ = …….
$ { 10 ^ {-15 } \over 100 \times 10 ^ {-9} } = 10 ^ {-8} $
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