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What is thermometry?

Thermometry The branch of heat relating to the measurement of the temperature of a body is called thermometry. The thermometer is an instrument used to measure the temperature of a body. The essential requisites of a thermometer are given as under:  1) Construction, 2) Calibration, and 3) Sensitiveness. For the construction of a thermometer, the proper choice of a substance, whose physical property varies uniformly with rising in temperature, is essential. 1) Construction The physical property of a substance plays an important role in the construction of a thermometer. In a mercury thermometer, the principle of expansion of mercury with rising temperature is used. The platinum resistance thermometer is based on the principle of the change in resistance with a change in temperature. The gas thermometer is based on the principle of change in volume or pressure with a change in temperature. 2) Calibration  When a thermometer is constructed, it should be properly calibrated. The standa

Physical Quantities and Their Measurements

Physics

Chapter - 1: Physical Quantities and Their Measurements

👉 All Chapter Contents 👈 



Question Bank

1.1 Physics

  • What is physics?
  • Describe the scope of physics.
  • What is the main goal of physics?
  • What are the branches of physics?
  • Who is famous for solar eclipse predictions?

1.2 Scope of Physics

  • Describe the scope of physics.
  • What is classical physics?
  • What is modern physics?

1.3 Development of Physics

  • Who is famous for solar eclipse predictions?
  • What does the word atom mean?
  • Who says the matter has an inseparable unit?
  • What is the contribution of Archimedes to physics?
  • What did Hygen contribute to physics?
  • Who wrote the encyclopedia about the history of nature?
  • Who is the proponent of the experimental scientific method?
  • Who made the model of the aircraft?
  • Why is Dr. Gilbert so memorable?
  • Who discovered the law of refraction of light?
  • What did Hygen contribute to physics?
  • Who invented the air pump?
  • Who measures the speed of light?
  • Who presented the idea of solar-centric theory?
  • What did Kepler say about the direction of the sun?
  • Write Galileo's contribution to physics?
  • Write Newton's contribution to physics.
  • Who invented calculus?
  • Why did the Industrial Revolution take place in Europe in the eighteenth century?
  • Who shows that electric current has a magnetic action?
  • Explain logically that the wonderful advances in physics have taken place in the twentieth century.
  • The nucleus is fissionable, who said in what year?
  • What happens as a result of nuclear fission?
  • Who provides the theory of relativity?
  • Who presented clear proof of Plank's quantum theory?
  • Which scientist has been awarded the Nobel Prize for his outstanding contribution to the discovery of the weakest force in the aggregation of fundamental forces?
  • Explain the discovery of physics has changed our way of life.

1.4 Objective of Physics

  • Describe the objective of physics.
  • Physics reveals the mysteries of nature - explain.
  • Physics describes the laws of nature - explain.
  • Technology improves by following the basic principles of physics - explain.

1.5 Physical Quantities and Their Measurements

  • What do you mean by quantity?
  • What are fundamental quantities?
  • Write all the fundamental quantities.
  • What are derived quantities?
  • Write some examples of derived quantities.
  • Proof that force is a derived quantity.
  • Why acceleration is a derived quantity?
  • Write differences between fundamental and derived quantities.
Units of Measurement
  • What is the unit of measurement?
  • What is an SI unit?
  • Why is a unit needed to express the measure of a quantity?
  • Write the definition of all fundamental quantities.
  • What is meter
  • What is a kilogram?
  • What is an ampere?
  • Write the symbol of a unit of fundamental quantities.
  • 1 nanosecond is equal to how many seconds?
  • How many meters is equal to 1 petameter?
  • What is a scientific symbol?
  • Express the number 0.0000000005687 in a scientific way.
  • Express the number 265945665665 in a scientific way.
  • Explian the advantages of the scientific method of numbers.
Dimensions
  • What is a dimension?
  • Determine the dimension of force?
  • Why it is necessary to know the level equations of different quantities?
Scientific symbols and notations
  • What are the methods to follow to write the symbol of units and different numbers?
  • Explain the reasons for using scientific symbols and prefixes.

1.6 Measuring Instruments

  • What is a meter scale?
  • How to measure with a meter scale?
  • What is the vernier constant?
  • How to determine the vernier constant of slide calipers?
  • What is vernier coincidence?
  • What does vernier coincidence 7 meant?
  • Why is the vernier scale used with the main scale?
  • Write the requirements of the vernier scale for precise and accurate measurements.
  • What are slide calipers?
  • How to determine the diameter of a cylinder with the help of slide calipers?
  • Describe how to determine the size of a cylinder using a slide caliper.
  • Describe the need for slide calipers for fine measurement.
  • What is a screw gauge?
  • How to measure by screw gauge?
  • What is pitch?
  • What is the least count?
  • How to determine the least count?
  • What is a stopwatch?
  • How to measure time with the help of a stopwatch?
  • Mathematical Problems:
    • Will be added...

1.7 Error and Accuracy

  • How many types of errors are usually seen during the measurement?
  • Explain the random error.
  • What is meant by mechanical error?


Secondary Physics


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