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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
A stopwatch has 10 divisions graduated between the 0 and 5 s marks. What is its least count?
A microscope is provided with a main scale graduated with 20 divisions in 1 cm and a vernier scale with 50 division on it of length same as of 49 divisions of main scale. Find the least count of the microscope.
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.
Name two factors on which the time period of a simple pendulum depends. Write the relation for the time period in terms of the above named factors.
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