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प्रश्न
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उत्तर
Two types of errors in measurement are
(a). Random errors-these errors are due to various factors. In a number of observations, we get different readings every time.
These errors can be minimized by making observations a large number of times and taking the arithmetic mean of the readings.
(b). Gross error- these errors are due to the carelessness of the observer like parallax, improper setting of the instrument.
These errors can be minimized only when the observer is careful in setting up of instrument and taking readings.
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संबंधित प्रश्न
Name the instrument which has the least count
1 mm
The main scale of a vernier callipers is calibrated in mm and 19 divisions of main scale are equal in length to 20 divisions of the vernier scale. In measuring the diameter of a cylinder by this instrument, the main scale reads 35 divisions and 4th division of vernier scale coincides with a main scale division. Find
(i) Least count and (ii) Radius of a cylinder.
Define the terms : oscillation
Name the convenient unit you will use to measure:
width of a book
Amongst the unit of volume which is most suitable for measuring:
Volume of a swimming tank
Amongst the unit of volume which is most suitable for measuring:
Volume of an exercise book
The size of bacteria is 2 μ.. Find the number of bacteria in 3 m length.
Is there any difference in the following measurements?
(a) 51.7 cm
(b) 51.70 cm
(c) 51.700 cm.
Explain your answer.
Which measurement is most accurate?
