Measurement

The coldness or hotness of a substance is expressed by-
1. Temperature
2. Atmosphere
3. Water
4. Light
The angle between the intersection of two lines or planes is called-
1. solid angle
2. angle
3. plane angle
4. small angle
The unit of plane angle is-
1. steradian
2. degrees
3. radian
4. candela
Which clock uses the periodic vibrations occuring within the atom?
1. quartz clock
2. atomic clock
3. periodic clock
4. stopwatch
Process of finding the solution by estimation is called-
1. precision
2. approximation
3. accuracy
4. closeness
Which of the following is correct?
1. K= C+273
2. K= C-273
3. K= F+273
4. K= F-273
Which is/are base quantities?
1. length
2. mass
3. time
4. luminous intensity
5. all of the above
The difference between real value and observed value is called-
1. approximation
2. precision
3. measurement
4. error
_ is the closeness of a measured value to the actual value.
1. precision
2. approximation
3. accuracy
4. error
What is the SI unit of current and which device is used to measure it?
1. Candela, Spectrometer
2. Ampere, Scale
3. Ampere, Ammeter
4. Metre, Scale