Recent Post

Why is biology divided into the physical and applied branches?

Why is biology divided into the physical and applied branches? In biology, living organisms, including their structure, function, growth, reproduction, classification, origin, and evolution are discussed. Biology also teaches how to use this knowledge to improve human life. To discuss this knowledge in detail, biology has been divided into two branches. one is physical biology in which theoretical concepts are discussed, and the other is applied biology in which the way of using theoretical knowledge is discussed. Actually, for learning and using knowledge easily and effectively, biology is divided into these two parts.

Work, Energy, and Power

Physics

Chapter - 4: Work, Energy, and Power

👉 All Chapter Contents 👈 


  • 4.2 Energy

  • 4.3 Different forms of Energy

  • 4.4 Sources of Energy

  • 4.5 Conservation and Transformation of Energy

  • 4.6 Relation between mass and Energy

  • 4.7 Power


Question Bank

4.1 Work

  • What is work?
  • What is the unit of work?
  • What is the dimension of work?
  • What do you understand by 40 J work?
  • What is one Joule?
  • What is positive work?
  • What is negative work?

4.2 Energy

  • What is energy?
  • What is the unit of energy?
  • What is the dimension of energy?

4.3 Different forms of Energy

  • Write the names of the different forms of energy.
  • What is kinetic energy?
  • What is potential energy?
  • What does the potential energy depend on?
  • What do you mean by 300 J of the potential energy of an object?
  • What do you mean by 300 J of the kinetic energy of an object?

4.4 Sources of Energy

  • What do you mean by chemical energy?
  • Describe the different types of chemical energy.
  • Describe the contribution of coal considering its economic, social, and environmental impact.
  • Describe the contribution of natural gas considering its economic, social, and environmental impact.
  • What do you mean by solar energy?
  • Write the use of solar energy.
  • What is hydroelectricity?
  • How can be hydroelectricity be generated?
  • What is wind energy?
  • Write the uses of wind energy.
  • What do you understand about geothermal energy?
  • Write the impact of energy transformation on the environment.

4.5 Conservation and Transformation of Energy

  • What is conservation of energy?
  • What do you understand by the transformation of energy?
  • How electrical energy is transformed?
  • How chemical energy is transformed?
  • How heat energy is transformed?
  • How mechanical energy is transformed?
  • How light energy is transformed?

4.6 Relation between mass and Energy

  • Explain the meaning of the equation E = mc2.
  • 1 eV = How many Joules?
  • 200 MeV = How many Joules?
  • 1 kilowatt hour = How many Joules?
  • What is the nuclear reaction?
  • What is chain reaction?

4.7 Power

  • What is power?
  • What is the unit of power?
  • What is the dimension of power?
  • What do you mean by one watt?
  • What does 40 W mean on an electric bulb?
  • Write differences between work and power.
  • Write differences between energy and power.

4.8 Efficiency

  • What is efficiency?
  • Why can't be the efficiency of an instrument 100%?
  • What do you understand by the efficiency of an instrument is 80%?

4.9 Role of Energy in Development Activities

  • Explain the role of energy in development activities.


Secondary Physics


Comments

Recent Posts

Popular Posts

The Importance of Information and Communication Technology

When you open the gas cylinder used for cooking, which action takes place first diffusion or effusion?

Electromagnetic Induction and Alternating Current

Why motha grass is called C4 plant?

The reason of higher rate of photosynthesis of lily plant than wheat plant.

How could I get cheaper car insurance?

Why is physiology called one of the prime branches of biology?