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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

Motion

Physics

Chapter - 2: Motion

👉 All Chapter Contents 👈 

  • 2.1 Rest and Motion
  • 2.2 Different Types of Motion
  • 2.3 Scalar and Vector quantities
  • 2.4 Distance and Displacement
  • 2.5 Speed and Velocity
  • 2.6 Acceleration and Deceleration or Retardation
  • 2.7 Equation of Motion
  • 2.8 Laws of Falling Bodies


Question Bank

2.1 Rest and Motion

  • What is rest?
  • What is motion?
  • What is a position?
  • What is a reference point?
  • What do you understand by reference frame?
  • All the rests and motion of the universe are relative, no motion is absolute, no absolute rest - explain.

2.2 Different Types of Motion

  • What is linear motion?
  • What is circular motion?
  • What is translational motion?
  • What is periodic motion?
  • What is oscillatory motion?
  • What is simple harmonic motion?
  • Explain all oscillatory motions are periodic motions but all periodic motions are not oscillatory motions.

2.3 Scalar and Vector Quantities

  • What is quantity?
  • What is the normal body temperature?
  • What is a scalar quantity?
  • What is a vector quantity?
  • Write the difference between scalar quantities and vector quantities.
  • Work is a scalar quantity - explain.
  • Explain the intensity of electricity as a vector quantity.

2.4 Distance and Displacement

  • What is distance?
  • What is displacement?
  • The movement does not depend on the direction of the object - explain.
  • What do you mean by the movement of an object is 60 m southward.

2.5 Speed and Velocity

  • What is speed?
  • What is the unit of speed?
  • What is the dimension of speed?
  • What is average speed?
  • What is instantaneous speed?
  • What do you understand by the speed of a car is 45 km/h?
  • What is velocity?
  • What is the unit of velocity?
  • What is the dimension of velocity?
  • What is average velocity?
  • What is uniform velocity?
  • What is unequal velocity?
  • When can the velocity of an object be zero?
  • Write the difference between speed and velocity.

2.6 Acceleration and Deceleration or Retardation

  • What is acceleration?
  • What is the unit of acceleration?
  • What is the dimension of acceleration?
  • What is uniform acceleration?
  • What is unequal acceleration?
  • Acceleration due to gravity is called uniform acceleration - explain.
  • What is deceleration or retardation?
  • Gravitational acceleration is called uniform acceleration - explain.

2.7 Equation of Motion

  • Write all the equation of motion.
Mathematical Problems:
  • Will be added...

2.8 Laws of Falling Bodies

  • What is gravity?
  • What is gravitation?
  • What is acceleration due to gravity?
  • What is falling body?
  • Write the laws of falling bodies.
  • What is the first law of falling bodies? Explain.
  • What is the second law of falling bodies? Explain.
  • What is the third law of falling bodies? Explain.
Mathematical Problems:
  • Will be added here....


Secondary Physics



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