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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
A boy weighing 40 kgf climbs up a stair of 30 steps each 20 cm high in 4 minutes and a girl weighing 30 kgf does the same in 3 minutes. Compare:
- The work done by them.
- The power developed by them.
How is the unit horsepower related to the S.I. unit of power?
Give an example when work done by the force of gravity acting on a body is zero even though the body gets displaced from its initial position.
State two factors on which power spent by a source depends. Explain your answer with examples.
A body, when acted upon by a force of 10 kgf, gets displaced by 0.5 m. Calculate the work done by the force, when the displacement is (i) in the direction of force, (ii) at an angle of 60° with the force, and (iii) normal to the force. (g = 10 N kg-1)
What do you mean by uniform circular motion?
How is 1 kgf related to the SI unit of force?
A bullet fired against a window glass pane makes a hole in it without any cracks while a stone striking the same glass pane smashes it; explain with reason.
Give the units of couple.
State the practical unit mainly used in mechanical engineering and write down its equivalent in watt.
