Physics
Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes

R/2
3R/4
5R/4
2R

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Physics
Kinetic energy depends on

The pressure of the moving body
The velocity or speed of the moving body.
Both mass and velocity of the moving body
The mass of the moving body

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