9th Physics Chapter1 Physical Quantities and Measurement
2. How does a digital stopwatch differ from an analog stopwatch in terms of operation and accuracy?
3. Describe a situation where a micrometer screw gauge would be more suitable than a Vernier caliper for measurement.
4. How does a screw gauge achieve higher precision compared to a ruler?
5. Plasma Physics:
6. What is a physical quantity, and how does it differ from a scalar quantity?
7. Explain the principle of operation of a screw gauge.
8. Define relative error and percentage error in the context of measurements, and explain how they are calculated.
9. Differentiate between a lever balance and an electronic balance in terms of operation and precision.
10. Define the term "pitch" in the context of a screw gauge.
11. How do you read the measurement on a Vernier caliper?
12. If the zero on the Vernier scale does not align perfectly with the main scale, how would you compensate for the error in measurement?