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प्रश्न
Name the quality which is measured in eV
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उत्तर
Energy is meaused in eV
संबंधित प्रश्न
How is work done by a force measured when the force is in the direction of displacement?
Give the expression for mechanical advantage of an inclined plane in terms of the length of an inclined plane.
State the condition when the work done by a force is positive. Explain with the help of examples.
The work done by a fielder when he takes a catch in a cricket match, is negative. Explain.
The moment of a force 10 N about a point 0 is 4 Nm. Calculate the distance of point of application of force from the point 0.
A mechanic can open a nut by applying a force of 200 N while using a lever handle of 50 cm length. How long handle is required if he wants to open it by applying a force of only 50 N?
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
A man raises a box of mass 50 kg to a height of 2 m in 20s, while another man raises the same box to the same height in 50s. Calculated:
- the work done, and
- the power developed by each man. Take g = 10 N kg-1.
State the S.I. and C.G.S. units of energy. How are they related?
Derive a relation between the S.I. and C.G.S. unit of force.
