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Solved Examples: Units and Measurement Video Lecture | Physics Class 11 - NEET

FAQs on Solved Examples: Units and Measurement Video Lecture - Physics Class 11 - NEET

1. What are the commonly used units of measurement in physics?

Ans. In physics, some commonly used units of measurement include meters for distance, kilograms for mass, seconds for time, and Newtons for force. These units are crucial for making accurate measurements and performing calculations in the field of physics.

2. How do you convert between different units of measurement?

Ans. To convert between different units of measurement, you can use conversion factors. Conversion factors are ratios that relate two different units of measurement for the same quantity. By multiplying or dividing the given value by the appropriate conversion factor, you can convert it into the desired unit.

3. What is the significance of using standard units in scientific measurements?

Ans. The use of standard units in scientific measurements is crucial for ensuring consistency and accuracy in scientific experiments and calculations. Standard units provide a common language for scientists worldwide, allowing them to communicate and understand each other's work. It also allows for easy comparison of results and promotes the reproducibility of experiments.

4. How can significant figures be used to express the accuracy of a measurement?

Ans. Significant figures are digits that carry meaning in a measurement. They indicate the precision or accuracy of a measurement. The more significant figures, the more precise the measurement. When expressing a measurement with significant figures, it is important to consider the uncertainty or limitations of the measuring instrument.

5. What are derived units and give an example?

Ans. Derived units are combinations of base units that are used to measure quantities derived from fundamental physical quantities. An example of a derived unit is the Newton (N), which is the unit of force derived from the base units of kilogram, meter, and second.

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