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Quiz Description :
Name: Accuracy in Measurement
Subject: Physics
Topic: Accuracy in Measurement
Questions: 15 Objective Type
Time Allowed: 10 Minutes
Important for: IIT JEE, UPSEE, WBJEE Engineering Entrance exams, AIPMT and other PMT entrance test, +2 school students and B. Sc. / M. Sc. College Students.
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 Question 1 of 15
1. Question
1 pointsThe accuracy of an observation, made with an instrument, depends upon
CorrectWe know that the accuracy of an observation, made with an instrument, depends upon the instrument as well as skill and care taken during the observation.
IncorrectWe know that the accuracy of an observation, made with an instrument, depends upon the instrument as well as skill and care taken during the observation.
UnattemptedWe know that the accuracy of an observation, made with an instrument, depends upon the instrument as well as skill and care taken during the observation.
 Question 2 of 15
2. Question
1 pointsThe authenticity of an observation, made from an instrument depends upon its
CorrectWe know that authenticity of an observation made from an instrument depends upon its accuracy. The accuracy of an instrument depends upon the quality of its components and maintenance.
IncorrectWe know that authenticity of an observation made from an instrument depends upon its accuracy. The accuracy of an instrument depends upon the quality of its components and maintenance.
UnattemptedWe know that authenticity of an observation made from an instrument depends upon its accuracy. The accuracy of an instrument depends upon the quality of its components and maintenance.
 Question 3 of 15
3. Question
1 pointsFor measuring radius accurately of a thin wire, we use
CorrectWe know that screw gauge is used for accurately measuring the radius of a thin wire or any other small object.
IncorrectWe know that screw gauge is used for accurately measuring the radius of a thin wire or any other small object.
UnattemptedWe know that screw gauge is used for accurately measuring the radius of a thin wire or any other small object.
 Question 4 of 15
4. Question
1 pointsIf we get more number of observation readings, for a practical, then the accuracy of the observation is
CorrectWe know that if we get more number of observation readings, for a practical, we get more accuracy. This method is generally adopted when we need very accurate results.
IncorrectWe know that if we get more number of observation readings, for a practical, we get more accuracy. This method is generally adopted when we need very accurate results.
UnattemptedWe know that if we get more number of observation readings, for a practical, we get more accuracy. This method is generally adopted when we need very accurate results.
 Question 5 of 15
5. Question
1 pointsThe accuracy of measurement is determined by
CorrectWe know that accuracy of measurement is determined by the percentage error. But absolute and random errors increase with an increase in the magnitude of quantity.
IncorrectWe know that accuracy of measurement is determined by the percentage error. But absolute and random errors increase with an increase in the magnitude of quantity.
UnattemptedWe know that accuracy of measurement is determined by the percentage error. But absolute and random errors increase with an increase in the magnitude of quantity.
 Question 6 of 15
6. Question
1 pointsMeasurement of current will be more accurate, when it is measured by
CorrectWe know that the measurement of current will be more accurate, when it is measured by milliammeter, because it will measure even a very small value of current.
IncorrectWe know that the measurement of current will be more accurate, when it is measured by milliammeter, because it will measure even a very small value of current.
UnattemptedWe know that the measurement of current will be more accurate, when it is measured by milliammeter, because it will measure even a very small value of current.
 Question 7 of 15
7. Question
1 pointsA student measured the diameter of a wire using a screw gauge with least count 0.001 and listed some measurements. The most correct measurement is
CorrectGiven: Least count of screw gauge = 0.001.
We know that as the least count of the screw gauge is 0.001, therefore the measurement is correct upto the third place of decimal.
Thus the most correct measurement is 5.320 cm.IncorrectGiven: Least count of screw gauge = 0.001.
We know that as the least count of the screw gauge is 0.001, therefore the measurement is correct upto the third place of decimal.
Thus the most correct measurement is 5.320 cm.UnattemptedGiven: Least count of screw gauge = 0.001.
We know that as the least count of the screw gauge is 0.001, therefore the measurement is correct upto the third place of decimal.
Thus the most correct measurement is 5.320 cm.  Question 8 of 15
8. Question
1 pointsA scientist measured acceleration due to gravity using an apparatus with least count 0.0001 and listed the measurements. The most correct measurement is
CorrectGiven: Least count of measurement = 0.0001.
We know that as the least count of the apparatus is 0.0001, therefore the measurement is correct upto the fourth place of decimal.
Thus the most accurate measurement is 9.8132 ms^{2}.IncorrectGiven: Least count of measurement = 0.0001.
We know that as the least count of the apparatus is 0.0001, therefore the measurement is correct upto the fourth place of decimal.
Thus the most accurate measurement is 9.8132 ms^{2}.UnattemptedGiven: Least count of measurement = 0.0001.
We know that as the least count of the apparatus is 0.0001, therefore the measurement is correct upto the fourth place of decimal.
Thus the most accurate measurement is 9.8132 ms^{2}.  Question 9 of 15
9. Question
1 pointsThe angle gauge by Dr. Tamlison consists of a set of
CorrectWe know that the first set of combination of angle gauges was devised by Dr. Tomlinson of National Physical Laboratory with thirteen separate gauges used in conjunction. These thirteen gauges can be divided into three series; degree, minutes and fractions of a minute.
IncorrectWe know that the first set of combination of angle gauges was devised by Dr. Tomlinson of National Physical Laboratory with thirteen separate gauges used in conjunction. These thirteen gauges can be divided into three series; degree, minutes and fractions of a minute.
UnattemptedWe know that the first set of combination of angle gauges was devised by Dr. Tomlinson of National Physical Laboratory with thirteen separate gauges used in conjunction. These thirteen gauges can be divided into three series; degree, minutes and fractions of a minute.
 Question 10 of 15
10. Question
1 pointsWhat will be the value of 1 Angstrom (Å) = _____
CorrectWe know that the value of 1 angstrom = 1.0 × 10^{10} meter
1 Å = 1.0 × 10^{10} mIncorrectWe know that the value of 1 angstrom = 1.0 × 10^{10} meter
1 Å = 1.0 × 10^{10} mUnattemptedWe know that the value of 1 angstrom = 1.0 × 10^{10} meter
1 Å = 1.0 × 10^{10} m  Question 11 of 15
11. Question
1 pointsThe basic principle of ‘Interchangeability’ is normally employed for
CorrectWe know that the basic principle of successful ‘Interchangeability’ is normally employed for the mass production, Production of identical parts and the parts within the prescribed limits of sizes.
IncorrectWe know that the basic principle of successful ‘Interchangeability’ is normally employed for the mass production, Production of identical parts and the parts within the prescribed limits of sizes.
UnattemptedWe know that the basic principle of successful ‘Interchangeability’ is normally employed for the mass production, Production of identical parts and the parts within the prescribed limits of sizes.
 Question 12 of 15
12. Question
1 pointsFollowing is the theoretical size which is common to both the parts of a mating pair
CorrectWe know that the base size is the theoretical size which is common to both the parts of mating pair.
IncorrectWe know that the base size is the theoretical size which is common to both the parts of mating pair.
UnattemptedWe know that the base size is the theoretical size which is common to both the parts of mating pair.
 Question 13 of 15
13. Question
1 pointsTo compare an unknown with a standard through a calibrated system is called
CorrectWe know that the indirect comparison is used to compare an unknown with a standard through a calibrated system.
IncorrectWe know that the indirect comparison is used to compare an unknown with a standard through a calibrated system.
UnattemptedWe know that the indirect comparison is used to compare an unknown with a standard through a calibrated system.
 Question 14 of 15
14. Question
1 pointsThe following term(s) is (are) associated with measuring devices
CorrectWe known that sensitivity an damping both are associated with measuring devices.
IncorrectWe known that sensitivity an damping both are associated with measuring devices.
UnattemptedWe known that sensitivity an damping both are associated with measuring devices.
 Question 15 of 15
15. Question
1 pointsThe ability by which a measuring device can detect small differences in the quantity being measured by it, is called its
CorrectWe know that by using the sensitivity ability a measuring device can detect small differences in the quantity.
IncorrectWe know that by using the sensitivity ability a measuring device can detect small differences in the quantity.
UnattemptedWe know that by using the sensitivity ability a measuring device can detect small differences in the quantity.