Four identical rods (same length and cross-section) are made of silver

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

Four identical rods (same length and cross-section) are made of silver, copper, iron, and glass. Their ends are kept at

100^{\circ}\text{C}

and

0^{\circ}\text{C}

. Which sequence correctly ranks the rods from greatest to least rate of heat conduction? (a) Copper

>

Silver

>

Iron

>

Glass (b) Silver

>

Copper

>

Iron

>

Glass (c) Silver

>

Copper

>

Glass

>

Iron (d) Iron

>

Silver

>

Copper

>

Glass