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प्रश्न
Water stored in a dam possesses :
विकल्प
no energy
electrical energy
kinetic energy
potential energy
उत्तर
Water stored in a tank possesses gravitational potential energy because of its position above the ground.
Therefore, the answer is, (d) Potential energy.
संबंधित प्रश्न
State whether the object possess kinetic energy, potential energy, or both :
A stretched spring lying on the ground ____________.
A stone is thrown upwards as shown in the diagram. When it reaches P, which of the following has the greatest value of the stone?
Name the device which converts electrical energy into mechanical energy.
Fill in the blanks with suitable words:
When a ball is thrown upwards, ___________ energy is transformed into ___________ energy.
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
How much electrical energy in joules does a 100 watt lamp consume : in 1 second?
How much electric energy in kWh is consumed by an electrical appliance of 1000 watts when it is switched on for 60 minutes?
Name the energy transfers which occur when : there is a picture on a television screen
An automobile engine propels a 1000 kg car (A) along a levelled road at a speed of 36 km h–1. Find the power if the opposing frictional force is 100 N. Now, suppose after travelling a distance of 200 m, this car collides with another stationary car (B) of the same mass and comes to rest. Let its engine also stop at the same time. Now the car (B) starts moving on the same level road without getting its engine started. Find the speed of the car (B) just after the collision.
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)
