Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Four different forms of energy:
(i) Solar energy
(ii) Mechanical energy
(iii) Wind energy
(iv) Nuclear energy
APPEARS IN
संबंधित प्रश्न
Define work.
How much work is done when a body of mass m is raised to a height h above the ground?
Choose one or more correct alternatives.
For work to be performed, energy must be ______.
- transferred from one place to another
- concentrated
- transformed from one type to another
- destroyed
What is meant by a translational motion? Give one example.
What is the relationship between Nm and dyne cm?
Complete the following sentences:
Kilowatt is the unit of ....... and kWh is the unit of
A boy of mass m climbs up a staircase of vertical height h.
- What is the work done by the boy against the force of gravity?
- What would have been the work done if he uses a lift in climbing the same vertical height?
State the energy changes which take place when A stone dropped from the top of a cliff reaches the ground after some time.
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
