Tag: energy for everything

Questions Related to energy for everything

The form of energy stored in kerosene is:

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. chemical

  2. heat energy

  3. magnetic

  4. mechanical

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Correct Option: A
Explanation:

Kerosene is the by-product of crude oil, which is a fossil fuel. In fossil fuels, energy is stored in the form of chemical energy, which is converted into heat and light energies when burnt.

Heat is a form of :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Force

  2. Energy

  3. Work

  4. Simple machine

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Correct Option: B
Explanation:

Heat is a form of energy.  Heat energy is transferred from one body to another as the result of a difference in temperature.

Its SI unit is $\textrm {Joule}$.

A solar cell converts solar energy into:

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Chemical energy

  2. Light energy

  3. Electrical energy

  4. Muscular energy

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Correct Option: C
Explanation:

In a solar cell, solar energy from the Sun is converted into electrical energy. This electrical energy is used by the various electrical appliances.

Hydro-electric power generates

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Electrical energy

  2. Nuclear energy

  3. Thermal energy

  4. None of these

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Correct Option: A
Explanation:

Hydro-electric power is the process where moving water rotates the turbine. Here potential energy of water converts into kinetic enery of water when waters falls downwards from a height.

After that kinetic energy of water transferred to kinetic energy of turbine and turbine starts rotating. 
After this turbine's kinetic energy is converted into electrical energy and in this way electricity is generated. 
Hence hydro-electric power generates electrical energy.

A stretched spring possesses:

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. kinetic energy

  2. elastic potential energy

  3. electric energy

  4. magnetic energy

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Correct Option: B
Explanation:

Elastic potential energy is Potential energy stored as a result of deformation of an elastic object, such as the stretching of a spring. It is equal to the work done to stretch the spring, which depends upon the spring constant k as well as the distance stretched.

The energy required to raise a given volume of water from a well can be

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Mega watts

  2. Mega newton

  3. Mega joules

  4. Kilo watts

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Correct Option: C
Explanation:

unit of energy is joule.

so energy required for raising water from the well is also in joule or kilo joule or mega joule.
watt is unit of energy per unit time and  newton is unit of force.
so best option is option C.
Also 1 Mega joule $=10\times10^6$ joule.

A cricket ball of mass 300 g is bowled towards a batsman with a speed of $\displaystyle 180\quad km\quad { h }^{ -1 }$. The batsman hits the ball such that it bounces back with the same speed. If the force exerted by the bat on the ball is 3000 N, find the duration of the impact is ____ s.

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. 1

  2. 0.01

  3. 0.1

  4. 0.04

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Correct Option: B

The type of energy utilised by humans and animals to carry out their daily life activities is ________ .

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. wind energy

  2. geothermal energy

  3. biochemical energy

  4. hydro energy

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Correct Option: C
Explanation:
Biochemical energy comes under biochemistry which is a study of chemical processes within and relating to living organisms. By controlling information flow through biochemical signaling and flow of chemical energy through metabolism, biochemical processes involves in day to day activities.
Hence biochemical energy is utilised by humans for carrying daliy activities.

The energy stored in a torch cell is :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Light energy

  2. Electrical energy

  3. Chemical energy

  4. Potential energy

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Correct Option: C
Explanation:

The torch cell makes use of redox reaction to store energy in the form of chemical energy. This chemical energy is then converted to electrical energy and finally to light energy as the bulb glows.


Hence, correct answer is option $C$

The energy that helps in burning of wood is :

physics the essence of change forms of energy and energy conservation energy for everything forms of energy

  1. Chemical

  2. Electrical

  3. Potential

  4. Muscular

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Correct Option: A
Explanation:

In the case of burning wood, stored chemical energy in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the chemical energy into heat and light energy.


Hence, correct answer is option $A$