Water is the ultimate source of energy.
The approximate value of solar constant is
1.4 k W/min
1.4 k W/m2
1.4 k J/m2
1.4 k W/min2
Solar energy can be obtained from
Radiation of sun incident on earth’s surface.
Solar rays reflected by moon towards earth.
Burning of coal to produce temperature comparable to sun’s temperature.
None of these
Which is the ultimate source of energy?
What percentage of the Sun's total energy output is received by the Earth?
Statement 1: Solar energy is a conventional form of energy.
Statement 2: Solar energy is a renewable form of energy.
Only statement 1 is correct.
Both statements are correct.
Only statement 2 is correct.
Both statements are wrong.
If the sun is the ultimate source of energy, then how can the energy in fossil fuels be said to have come from the sun?
The heating effect of sun rays converts rocks into fossil fuels.
None of the above.
All the fossil fuels have come from biomass and biomass have come from photosynthesis, which uses the solar energy.
Fossils fuels were transported from the sun to earth millions of years ago.