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प्रश्न
Name the material commonly used for the manufacturing of solar cells.
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उत्तर
Silicon and Gallium. Solar cell produces d.c. current. State whether a solar cell produces a.c. or d.c. current.
संबंधित प्रश्न
The moon is revolving around the earth in a circular path. How much work is done by the moon?
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.
Name the physical quantity whose SI unit is Nm.
Nm is the unit of .......
Complete the following sentences:
The SI unit of work is ....... and of power is .......
Name the physical quantity whose MKS units are kgm2s-3.
Give an example
Chemical energy changes to heat energy.
A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
