Advertisements
Advertisements
प्रश्न
Name the device or machine which convert :
light energy into heat energy.
उत्तर
A solar water heater converts light energy into heat energy.
APPEARS IN
संबंधित प्रश्न
State the condition under which the mechanical energy is conserved.
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
State whether the object possess kinetic energy, potential energy, or both :
A stretched spring lying on the ground ____________.
Give two examples where a body possesses both, kinetic energy as well as potential energy.
What are the various forms of energy?
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
Name the device or machine which convert :
Electrical energy into heat energy.
Name the device or machine which convert :
Chemical energy into kinetic energy (or mechanical energy).
A bulb lights up when connected to a battery. State the energy change which takes place :
A body of mass 10 kg falls from a height of 20 m to 8 m. Calculate:
- the loss in potential energy of the body, and
- the total energy possessed by the body at any instant? (Take g = 10 m s-2)
