2 Which instrument is most suitable for measuring the thickness of a thin metal sheet? A Meter rule B Measuring tape C Micrometer screw gauge D Vernier calipers
3 Closeness of a measured value to the true value is called: A Precision B Accuracy C Significant figures D Estimation
5 A vector quantity has: A Only magnitude B Only direction C Both magnitude and direction D Neither magnitude nor direction
6 A digital stopwatch is preferred over a mechanical stopwatch because it: A Is cheaper B Has no moving parts and gives direct reading C Requires more maintenance D Can only measure longer intervals
7 Which of the following instruments is used to measure small lengths accurately? A Measuring tape B Vernier caliper C Stopwatch D Thermometer
10 A quantity that has both magnitude and direction is called a: A Scalar quantity B Vector quantity C Base quantity D Derived quantity
11 The closeness of a measured value to the true value is called: A Precision B Accuracy C Error D Uncertainty
13 Which of the following is a time measuring instrument? A Micrometer B Stopwatch C Thermometer D Barometer
15 What is the least count of a digital stopwatch that displays time to two decimal places of a second? A 0.1 s B 0.01 s C 0.001 s D 1 s
16 To measure the diameter of a thin wire, the most suitable instrument is: A Metre rule B Vernier calipers C Micrometer screw gauge D Measuring tape
17 A quantity that has both magnitude and direction is called: A Scalar B Vector C Base quantity D Derived quantity
20 Which of the following is the correct reading with respect to significant figures? A 0.0045 has 5 significant figures B 0.0045 has 2 significant figures C 0.0045 has 4 significant figures D 0.0045 has 1 significant figure
21 The interval from 2000 to 2010 is 10 years. This is an example of: A Accuracy B Precision C Significant figures D Calculational estimate
24 The consistency of repeated measurements is called: A Accuracy B Precision C Validity D Reliability