Tag: forms of energy and energy conservation

Questions Related to forms of energy and energy conservation

The energy released on burning coal, oil, wood or gas is:

  1. kinetic energy

  2. heat energy

  3. light energy

  4. solar energy


Correct Option: B
Explanation:

The energy released on burning coal, oil, wood or gas is the heat energy.

A vibrating body possesses:

  1. electrical energy

  2. nuclear energy

  3. potential energy

  4. sound energy


Correct Option: D
Explanation:

A vibrating body possesses sound energy. It is sensed by our ears.

When two dry bodies are rubbed together, they get charged due to movement of free electrons from one body to the other body, so they possess:

  1. nuclear energy

  2. electrical energy

  3. hydro energy

  4. light energy


Correct Option: B
Explanation:

When two dry bodies are rubbed together, they get charged due to movement of free electrons from one body to the other body, so they possess electrical energy.

The energy possessed by fast moving water is called:

  1. solar energy

  2. elastic energy

  3. hydro energy

  4. geothermal energy


Correct Option: C
Explanation:

The energy possessed by the fast moving water is called the hydro energy. This energy is used to generate electricity in hydroelectric power stations.

A magnet can attract iron filings as it possesses:

  1. kinetic energy

  2. magnetic energy

  3. mechanical energy

  4. solar energy


Correct Option: B
Explanation:

The energy possessed by a magnet due to which it can attract iron filings, is called the magnetic energy.

The ionization energy of an electron present in the second Bohr's orbit of hydrogen is:

  1. $54.4eV$

  2. $13.6eV$

  3. $1.5eV$

  4. $3.4eV$


Correct Option: D
Explanation:

In the second orbit, $n=2$
$\therefore$ Ionisation energy $E=-\cfrac{13.6}{{(2)}^{2}}$
$=-\cfrac{13.6}{4}=3.4eV$

What is potential energy?

  1. Energy of an abject due to its position or arrangement in a system

  2. Energy of an abject due to its nature or arrangement in a system

  3. Energy of an abject due to its shape or arrangement in a system

  4. None


Correct Option: A
Explanation:

Energy of an abject due to its position or arrangement in a system is potential energy. 

Potential energy is classified into which two energy?

  1. Gravitational and Elastic Potential Energy

  2. Kinetic and Elastic Potential Energy

  3. Mechanical and Elastic Potential Energy

  4. None


Correct Option: A
Explanation:

Gravitational and Elastic Potential Energy are two types of potential energy

Gravitational potential energy: Energy stored in the object at a certain height above ground.
Elastic potential energy:Energy stored in streched or compressed spring.

Mechanical energy is the form of which two energies:

  1. Potential and Kinetic

  2. Thermal and Nuclear

  3. Potential and Sound

  4. Light and Sound


Correct Option: A
Explanation:

Mechanical energy comprises of Potential and Kinetic energy.

Which one of the following is NOT a form of energy?

  1. Mechanical energy

  2. Nuclear Energy

  3. Thermal Energy

  4. Leap Energy


Correct Option: D
Explanation:

Leap energy is not any kind of energy