Advertisements
Advertisements
प्रश्न
Give one disadvantage of using a solar cell.
Advertisements
उत्तर
One disadvantage of solar cell is listed below:
i. The initial cost of a solar panel is sufficiently high.
संबंधित प्रश्न
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
Name the type of energy (kinetic or potential) possessed by the following:
A bullet fired from a gun.
What do you understand by the kinetic energy of a body?
Name five renewable sources of energy.
What is the main source of energy for earth?
What is hydro energy?
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
What kind of energy is possessed in a situation when?
Water stored in dams.
State the energy changes which take place when:
A battery lighting up a bulb.
Give one example when:
Chemical energy to electrical energy.
