Saturday, August 6, 2022

Ch-09: Transfer of Heat


Ch-09: Transfer of Heat

After studying this unit, the students will be able to:

  • Recall that thermal energy is transferred from a region of higher temperature to a region of lower temperature.
  • Describe in terms of molecules and electrons, how heat transfer occurs in solids.
  • State the factors affecting the transfer of heat through solid conductors and hence, define the term Thermal Conductivity.
  • Solve problems based on thermal conductivity of solid conductors.
  • Write examples of good and bad conductors of heat and describe their uses.
  • Explalin the convection currents in fluids due to difference in density.
  • State some examples of heat transfer by convection in everyday life.

Ch-08: Thermal Properties of Matter


Ch-08: Thermal Properties of Matter 

After studying this unit, the students will be able to:

  • Define temperature (as quantity which determines the direction of flow of thermal energy).
  • Define heat (as the energy transferred resulting from the temperature difference between two objects).
  • List basic thermometric properties for a material to construct a thermometer.
  • Convert the temperature from one scale to another
  • Describe rise in temperature of a body in terms of an increase in its internal energy.
  • Define the terms heat capacity and specific heat capacity.
  • Describe heat of fusion and heat of vaporization.
  • Describe experiments to determine heat of fusion and heat of vaporization of ice and water respectively by sketching temperature-time graph on heating ice.

Ch-07: Properties of Matter


Ch-07: Properties of Matter 

After studying this unit, the students will be able to:

  • State kinetic molecular model of matter (solid, liquid and gas forms).
  • Describe briefly the fourth state of matter, i.e plasma.
  • Define the term density.
  • Compare the densities of a few solids, liquids and gases.
  • Define the term pressure (as a force acting normally on unit area).
  • Explain how pressure varies with force and area in the context of everyday examples.
  • Explain that the atmosphere exerts a pressure.
  • Describe how the height of a liquid column may be used to measure the atmospheric pressure.
  • Describe that atmospheric pressure decreases with the increase in height above the Earth's surface.
  • Explain that changes in atmospheric pressure in a region may indicate a change in the weather.
  • State Pascal's law.
  • Apply and demonstrate the use with examples of Pascal\'s law.

Ch-06: Work & Energy


Ch-06: Work & Energy 

After studying this unit, the students will be able to:

  • Define work and its SI unit.
  • Calculate word done using equation: Work = force x distance moved in the direction of force
  • Define energy, kinetic energy and potential energy. State unit of energy.
  • List the different forms of energy with examples.
  • Describe the processes by which energy is converted from one form to another.
  • State mass energy equation E-mc2 and solve problems using it.
  • Describe the process of electricity generation by drawing a block diagram of the process from fossil fuel input to electricity output.
  • List the environmental issues associated with power generation.

Ch-05: Gravitation

Ch-05: Gravitation

After studying this unit, the students will be able to:

  • State Newton's law of gravitation.
  • Explain that the gravitational forces are consistent with Newton's third law.
  • Explain gravitational field as an example of field of force.
  • Define weight (as the force on an object due to gravitational field).
  • Calculate the mass of Earth by using law of gravitation.
  • Solve problems using Newton's of gravitation.

Ch-04: Turning Effects of Force

Ch-04: Turning Effects of Force 

After studying this unit, the students will be able to:

  • Define like and unlike parallel forces.
  • State head to tail rule of vector addition of forces / vectors.
  • Describe how a force is resoved into its perpendicular components.
  • Determine the magintude and direction of a force from its perpendicular components.
  • Define moment of force or torque as moment = force x perpendicular distance from pivot to the line of action of force.
  • Explain the turning effect of force by relating it to everyday life. - State the principle of moments.
  • Define the centre of mass and centre of gravity of a body.
  • Define couple as a pair of forces tending to produce rotation.
  • Prove that the couple has the same moments about all points.

Ch-03: Dynamics

Ch-03: Dynamics

After studying this unit, the students will be able to:

  • Define momentum, force, inertia, friction and centripetal force.
  • Solve problems using the equation Force = change in momentum / change in time.
  • Explain the concept of force by practical examples of daily life.
  • State Newton's laws of motion.
  • Distinguish between mass and weight and solve problems using F=ma, and w=mg.
  • Calculate tension and acceleration in a string during motion of bodies connected by the string and passing over frictionless pulley using second law of motion.
  • State the law of conversation of momentum.
  • Use the principle of conservation of momentum in the collision of two objects.

Ch-02: Kinematics

Ch-02: Kinematics

After studying this unit, the students will be able to:
  • Describe using examples how objects can be at rest and in motion simultaneously.
  • Identify different types of motion i.e translatory (linear random and circular); rotatory and vibratory motions and distinguish among them.
  • Differentiate with examples between distance and displacement, speed and velocity.
  • Differentiate with examples between scalar and vector quantities.
  • Represent vector quantities by drawing.
  • Define the terms speed, velocity and acceleration.
  • Plot and interpret distance-time graph and speed-time graph.
  • Determine and interpret the slope of distance-time and speed-time graph.

Friday, August 5, 2022

Ch-01: Physical Quantities and Measurements

Ch-01: Physical Quantities and Measurements

After studying this unit, the students will be able to:

  • Describe the crucial role of Physics in Science, Technology and society.
  • Explain with examples the Science is based on physical quantities which consist of numerical magnitude and a unit.
  • Differentiate between base and derived physical quantities.
  • List the seven units of System International (SI) alongwith their symbols and physical quantities (standard definitions of SI units are not required).
  • Interconvert the prefixes and their symbols to indicate multiple and sub-multiples for both base and derived units.