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प्रश्न
Explain the following sentence.
Saving energy is the need of the hour.
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उत्तर
- Yes, saving energy is the need of the hour because energy demand is increasing rapidly due to population growth, industrialisation, and technological development.
- Most of the energy we use comes from non-renewable sources such as coal, petroleum, and natural gas, which are limited and may be exhausted in the future. Excessive use of these fuels also causes pollution and environmental problems.
- By saving energy, we can conserve natural resources, reduce pollution, lower energy costs, and ensure energy availability for future generations.
Therefore, saving energy is essential for sustainable development and environmental protection.
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संबंधित प्रश्न
Write the correct option from the given multiple options.
Which of the following is not the source of green energy?
Explain the following sentence.
Energy obtained from fossil fuels is not green energy.
In modern civilization, __________ has become a primary need.
Forms of energy.
Stove : Thermal energy : : Sewing machine : _____________
Give scientific reason.
Energy saving is a need of the hour.
Two springs A and B are stretched by applying forces of equal magnitudes at the four ends. If spring constant of A is 2 times greater than that of spring constant of B, and the energy stored in A is E, then that in B is
