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प्रश्न
State two advantages and disadvantages of using nuclear energy for producing electricity.
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उत्तर
Advantages:
(i) A very small amount of nuclear fuel produces a huge amount of energy.
(ii) Nuclear fuel does not contribute to harmful greenhouse gases to the atmosphere of burning.
Disadvantages:
(i) The waste that is produced when using nuclear fuel is radioactive and very harmful. It needs to be disposed of carefully.
(ii) World uranium supplies may run out in about 50 years.
संबंधित प्रश्न
State the energy change in the following device while in use:
A loudspeaker
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
Name the physical quantity measured in terms of horse power.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A piece of stone placed on the roof.
Name the form of mechanical energy, which is put to use.
Name the two groups in which various sources of energy are classified. State on what basis are they classified.
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
Calculate the kinetic energy of a body of mass 0.1 kg. and momentum 40kg m/s.
