Advertisements
Advertisements
Question
Give an example
Light energy changes to electrical energy.
Advertisements
Solution
Solar cell
APPEARS IN
RELATED QUESTIONS
A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?
Explain degradation of energy by taking two examples of your daily life.
The work done by a force acting obliquely is given by the formula : W = F cos θ ✕ s. What will happen to the work done if angle θ between the direction of force and motion of the body is increased gradually? Will it increase, decrease or remain constant.
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
A body does 20 J of work in 10 s. What is its power?
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 coolie standing with a heavy load on his head
A proton is kept at rest. A positively charged particle is released from rest at a distance d in its field. Consider two experiments; one in which the charged particle is also a proton and in another, a positron. In the same time t, the work done on the two moving charged particles is ______.
