Measurement

Which one of the following system of units is the British System of units?
1. CGS
2. MKS
3. FPS
4. SI
Electric current belongs to
1. base
2. supplementary
3. derived
4. professional
SI unit of temperature is-
1. celsius
2. farenheit
3. kelvin
4. ampere
Amount of substance is-
1. directly propotional to the number of atoms
2. inversaly propotional to the number of atoms
3. directly propotional tot he square of number of atoms
4. inversaly propotional to the square of number of atoms
Luminous intensity is the intensity of-
1. laser light
2. UV light
3. visible light
4. IR light
SI unit stands for-
1. International system of units
2. Integrated System of units
3. International symbol of units
4. Integrated symbol of units
Closeness of two or more measured values is called as -
1. accuracy
2. precision
3. error
4. approximation
Quantities other than base quantities are called-
1. supplementary quantities
2. derived quantities
3. professional quantities
4. energy quantitites
Which of the following statements about approximation is wrong?
1. approximation gives accurate values
2. it simplifies the calculation
3. it is very useful when little information is available
4. it gives the nearest value only
The solid angle is measured in-
1. radians
2. degrees
3. steradian
4. metre square