Question

draw a neat diagram showing different position of an object image using convex mirror

Answer 1

Answer:

use the NCERT textbooks and draw it and understand

Answer 2

Resistance of a wire is directly proportional to the length of the wire.

R ∝ l

The resistance of a conductor depends on the number of collisions which the electrons suffer with the fixed positive ions while moving from one end to the other end of the conductor. Obviously the number of collisions will be more in a longer conductor as compared to a shorter conductor. Therefore, a longer conductor offers more resistance.