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प्रश्न
State two disadvantages of producing hydroelectricity.
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उत्तर
Disadvantages of producing hydroelectricity:
1. Due to the construction of dams over the rivers, plants and animals of that place get destroyed or killed.
2. The ecological balance in the downstream areas of rivers gets disturbed.
संबंधित प्रश्न
A coolie does no work against the force of gravity while carrying a luggage on a road.
Power spent by a body depends on the time for which it does work.
State two conditions when no work is done by a force.
Express joule in terms of erg.
A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m s−2).
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
What is work?
A proton is kept at rest. A positively charged particle is released from rest at a distance d in its field. Consider two experiments; one in which the charged particle is also a proton and in another, a positron. In the same time t, the work done on the two moving charged particles is ______.
