write short notes on -
1 metre
2 candela
3 luminous intensity
4 kilogram
5 second
6 kelvin
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Length: metre (m)
The metre is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.
Luminous intensity: candela (cd)
The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.
Mass: kilogram (kg)
The kilogram is equal to the mass of the international prototype of the kilogram: a piece of platinum-iridium alloy kept at the International Bureau of Weights and Measures (BIPM) in France.
Time: second (s)
The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom.
Thermodynamic temperature: kelvin (K)
The kelvin is 1/273.16 of the thermodynamic temperature of the triple point of water.
The unit kelvin and its symbol K should be used to express both thermodynamic temperature and an interval or a difference of temperature.
In addition to the thermodynamic temperature (symbol T) there is also the Celsius (symbol t) defined by the equation t=T-T0 whereT0=273.15 K. Celsius temperature is expressed in degree Celsius (symbol C). The unit 'degree Celsius' is equal to the unit 'kelvin', and a temperature interval or a difference of temperature may also be expressed in degrees Celsius. (The word degree and the sign o must not be used with kelvin or K).
The metre is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.
Luminous intensity: candela (cd)
The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.
Mass: kilogram (kg)
The kilogram is equal to the mass of the international prototype of the kilogram: a piece of platinum-iridium alloy kept at the International Bureau of Weights and Measures (BIPM) in France.
Time: second (s)
The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom.
Thermodynamic temperature: kelvin (K)
The kelvin is 1/273.16 of the thermodynamic temperature of the triple point of water.
The unit kelvin and its symbol K should be used to express both thermodynamic temperature and an interval or a difference of temperature.
In addition to the thermodynamic temperature (symbol T) there is also the Celsius (symbol t) defined by the equation t=T-T0 whereT0=273.15 K. Celsius temperature is expressed in degree Celsius (symbol C). The unit 'degree Celsius' is equal to the unit 'kelvin', and a temperature interval or a difference of temperature may also be expressed in degrees Celsius. (The word degree and the sign o must not be used with kelvin or K).
sharmaaashish573:
my mistake
??
what are you answering if you don't know not type the answer
mc
you also
mc
teri maki
don't use gaaali mc
ok
I'm aks a question maths
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