# Introduction to Physics - Measuring Instruments

This exercise consist of 7 objective questions.

1.  The diagram shows a stopwatch. What is the sensitivity of the stopwatch?
1. 0.01 s
2. 0.02 s
3. 0.1 s
4. 0. 2 s

2.  What is the reading shown in the stopwatch on the right?
1. 186.4 s
2. 6.4 s
3. 126.4 s
4. 185.4 s

3.  What is the reading shown in the stopwatch on the right?
1. 175.2 s
2. 115.2  s
3. 55.2 s
4. 235.2 s

4.  The figure shows the reading on a stopwatch when the reset button is pressed. What is the zero error shown in  the stopwatch?
1. -0.2 s
2. -0.1 s
3. +0.1 s
4. +0.2 s

5.  Which of the following are the precaution steps to be taken when using a ruler?
1. Ensure the object to be measured is in contact with the ruler.
2. Avoid parallax error.
3. Avoid zero error.
6.  What is the sensitivity of the mercury thermometer with range -10oC - 110oC?
1. 1 oC
2. 2 oC
3. 0.5 oC
4. 0.2 oC
7.  An voltmeter must be connected ________ the electrical component in a circuit.
1. in series with
2. parallel to
3. after
4. before