Physics 9 Chapter 1 - Physical Quantities and Measurements - 19


1. What is the least count of an electronic balance in milligrams?




2. Which of the following balance is more sensitive?




3. Which of the following balance is least sensitive?




4. By which of the following balance the reading taken would be more precise?




5. Which of the following is an instrument that is used to measure the time interval of an event?




6. How many types of stopwatches are there?




7. What is the least measurement that can be taken by using a mechanical stopwatch?




8. Digital stopwatches are commonly used in...............?




9. What is the least measurement that can be taken by using a digital stopwatch?




10. In a mechanical stopwatch, what is used to wind the spring?




11. When the knob is pressed once, the watch......................?




12. When the knob is pressed two times, the watch..............?




13. When the knob is pressed third time, the watch..............?




14. A measuring cylinder is a ..................... cylinder?




15. A measuring cylinder is a ..................... cylinder?




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