1 In multiplication and division, the result should be rounded off to: A The smallest number of significant figures in the data B The greatest number of significant figures in the data C Twice the number of significant figures D The number of decimal places
2 A quantity that has both magnitude and direction is called a: A Scalar quantity B Vector quantity C Base quantity D Derived quantity
4 The precision of a measurement refers to: A How close the measurement is to the true value B The smallest division on the measuring instrument C The number of digits in the measurement D The unit used for the measurement
5 Which instrument is used to measure the length of a curved line? A Metre rule B Vernier callipers C Thread and metre rule D Screw gauge
6 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
7 A stopwatch that shows time as 00:00:00 and has start/stop buttons is an example of: A Mechanical stopwatch B Digital stopwatch C Analogue clock D Pendulum clock
9 The reading shown by a digital stopwatch is 2 minutes and 30.5 seconds. How many seconds is this? A 120.5 s B 150.5 s C 180.5 s D 230.5 s
10 The main scale of a Vernier caliper is graduated in: A Millimeters B Centimeters C Inches D Meters
12 When rounding off 7.865 to three significant figures, the correct result is: A 7.86 B 7.87 C 7.865 D 7.9
13 The volume of an irregular solid can be found using: A A meter rule B A stopwatch C A displacement can and measuring cylinder D A beam balance
14 The least count of a mechanical stopwatch showing seconds and tenths of a second is: A 0.01 s B 0.1 s C 1 s D 0.001 s
17 Which instrument is most suitable for measuring the diameter of a thin wire? A Metre rule B Measuring tape C Vernier calipers D Screw gauge
19 Precision refers to: A How close a measurement is to the true value B How close repeated measurements are to each other C The unit used for measurement D The size of the measuring instrument
20 The relation between physics and physical quantities is that physics: A Ignores physical quantities B Studies only non-physical quantities C Deals with measurements of physical quantities D Has no relation with measurements
21 Which instrument is used to measure the volume of a liquid accurately in a laboratory? A Ruler B Measuring cylinder C Micrometer screw gauge D Stopwatch
22 The correct relationship between physics and physical quantities is: A Physics studies non-physical quantities. B Physics studies physical quantities and their measurements. C Physics only studies motion. D Physics does not involve measurement.