Question: Define measurement in the context of physics.

 Answer: Measurement in physics refers to the process of quantifying a

physical property, such as length, mass, time, or temperature, using a

standard unit.

Question: Explain the importance of using standard units in scientific

measurements.

 Answer: Standard units provide a consistent and universally accepted

basis for comparing and communicating measurements. They ensure

accuracy, reproducibility, and reliability of experimental results.

Question: Describe the concept of uncertainty in measurements.

 Answer: Uncertainty represents the degree of doubt or error associated

with a measurement. It arises from limitations in the measuring

instrument, human perception, and environmental factors.

Question: Differentiate between precision and accuracy in measurements.

 Answer: Precision refers to the consistency and reproducibility of

measurements, while accuracy indicates how close a measurement is to

the true value.

Question: Provide examples of fundamental and derived physical

quantities.

 Answer: Fundamental quantities include length, mass, time, electric

current, temperature, amount of substance, and luminous intensity.

Derived quantities, such as speed, volume, and energy, are derived from

combinations of fundamental quantities.

Question: Discuss the principle of the vernier caliper and its applications

in measuring length.

 Answer: The vernier caliper employs a sliding scale to make precise

measurements of length, diameter, and thickness. It is commonly used in

physics experiments and engineering applications.

Question: Explain the working principle of a micrometer screw gauge and

its advantages over other length-measuring devices.

 Answer: A micrometer screw gauge uses a calibrated screw to achieve