Advertisements
Advertisements
प्रश्न
What physical quantity does the electron volt (eV) measure? How is it related to the S.I. unit of that quality?
Advertisements
उत्तर
Energy is the physical amount that an electron volt measures.
Relation: 1eV = 1.6 × 10-19 J
APPEARS IN
संबंधित प्रश्न
What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.
A man spends 7.4 KJ energy in displacing a body by 74 m in the direction in which he applies force in 2.5 s. Calculate the force applied.
An ox can apply a maximum force of 1000 N. It is taking part in a cart race and is able to pull the cart at a constant speed of 30 ms-1 while making its best effort. Calculate the power developed by the ox.
A body of mass m is moving with a uniform velocity u. A force is applied on the body due to which its velocity changes from u to v. How much work is being done by the force?
What do you mean by uniform circular motion?
A man spends 7.4 kJ energy in displacing a body by 74 m in the direction in which he applies force, in 2.5 s. Calculate the power spent (in H.P) by the man.
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B of same mass does the same in 15 s. Compare the power developed by the persons A and B.
What do you understand by work? Is work a scalar or a vector quantity?
Justify the statement. “Power can be expressed as the product of force and velocity.”
Derive a relation between the S.I. and C.G.S. unit of force.
