IGCSE Physics Quiz - Time Measurement Techniques

Question 1

Which device is most suitable for measuring short time intervals in a school lab?

Accepted Answer

Stopwatch

Question 2

What is the least count of a typical digital stopwatch?

Accepted Answer

0.01 second

Question 3

Which unit is used for measuring time?

Accepted Answer

Second

Question 4

Which of the following devices can be used to measure long time intervals like a week?

Accepted Answer

Wall clock or calendar

Question 5

Which method improves accuracy when using a stopwatch manually?

Accepted Answer

Use two observers: one for start, one for stop

Question 6

Why is a digital timer better than an analog stopwatch in some experiments?

Accepted Answer

It avoids parallax error and is more precise

Question 7

Which of these time intervals is most appropriate to measure with a stopwatch?

Accepted Answer

A falling object's time

Question 8

What is a limitation of using a handheld stopwatch?

Accepted Answer

Human reaction time delay

Question 9

Which action ensures the stopwatch is used accurately?

Accepted Answer

Starting and stopping exactly at event points

Question 10

To measure the time taken by a ball to drop 2 meters, you should use:

Accepted Answer

Stopwatch

Question 11

What can cause an error in using a stopwatch?

Accepted Answer

Late button press

Question 12

A student uses a stopwatch to time a 100 m sprint. What will improve the result's accuracy?

Accepted Answer

Using automatic sensors

Question 13

What is the reading on a stopwatch showing 2 minutes and 35 seconds?

Accepted Answer

155 s

Question 14

Why is it better to repeat a time-based experiment several times?

Accepted Answer

To average results and reduce error

Question 15

If a timer starts at 0.00 s and stops at 5.24 s, what is the time interval?

Accepted Answer

5.24 s

Quiz IGCSE Physics – 1 Motion, forces, and energy – 1.1 Physical quantities and measurement techniques – 2 Describe how to measure a variety of time intervals using clocks and digital timers