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प्रश्न
State the energy transformation on the following:
Electricity is obtained from solar energy.
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उत्तर
Light energy into electrical energy
संबंधित प्रश्न
Name a common device where a gear train is used
What are the two kinds of mechanical energy?
Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.
MULTIPLE CHOICE TYPE
In an electric cell which in use, the change in energy is from:
Define the term 'work'. Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula.
Name five appliances or machines which use an electric motor.
(a) Define power and name its unit.
(b) A girl weighting 50 kg climbs up 60 steps each of 20 cm height in 5 minutes. Calculate the power developed.
Define Translational motion.
A ______ should act on an object.
