Two wires of the same length `l` and radius are joined end to end and loaded. If the Young's moduli of the materials of the wires are `Y_(1)` and `Y_(2)`, the combination behaves as a single wire of Young's modulus will be

Two wires of same length and radius are joined end to end and loaded. The Young.s modulii of the materials of the two wires are Y_(1) and Y_(2) . If the combination behaves as a single wire them its Young.s modulus is

Two wires of same length and radius are joined in parallel and loaded. The Young.s modulii of the material of the wires are Y_(1) & Y_(2) . If the combination is taken as a single wire them its Young.s modulus is

To determine Young's modulus of the material of a wire,

To determine Young's modulus of the material of a wire,

The Youngs modulus of the material of the wire of length L and radius r is Y Nm^(-2) . If the length is reduced to L/2 and radius r/2, then Youngs modulus will be.

Two wires of copper are given . Write A: length e and radius r, wire B: length e and radius 2r. If Young's modulus for wire A is Y_(A) and for wire B is Y_(B) . Then-

Two wires of same material have length L and L/2 and radius r and r/2 respectively. The ratio of their Young's modulus is

Two wires of same length and thickness are joined end to end. Their Young's moduli are 15 xx 10^10 pa and 20 xx 10^10pa . If the combination is stretched by a certain load, the elongations of these wires will be in the ratio