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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
A boy weighing 25 kgf climbs up from the first floor at height 3 m above the ground to the third floor at height 9m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg -1)
State two advantage of producing hydroelectricity.
Explain degradation of energy by taking two examples of your daily life.
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
In case of negative work, the angle between the force and displacement is :
________ is said to be done when a force is acting on it.
