Two identical square rods of metal are welded end to end as shown in fig `(1)`. `20 cal` of heat flows through it in `4min`. If the rods are welded as shown in fig.`(2)`, the same amount of heat will flow through the rods in

Two identical square rods of metal are welded end to end as shown in figure (i), 20 calories of heat flows through it in 4 minutes. If the rods are welded as shown in figure (ii), the same amount of heat will flow through the rods in

Two identical square rods of metal are welded end to end as shown in figure (i), 20 calories of heat flows through it in 4 minutes. If the rods are welded as shown in figure (ii), the same amount of heat will flow through the rods in

Two identical square rods of metal are welded end to end as shown in figure (i), 20 calories of heat flows through it in 4 minutes. If the rods are welded as shown in figure (ii), the same amount of heat will flow through the rods in

Two identical rods of a metal are welded as shown in figure-4.39(a). 20 cal of heat flows through them in 4 minute. If the rods are welded as shown in figure-4.39(b), then the same amount of heat will flow in:

Two identical square rods of metal are welded end to end as shown in figure (a). Assume that 10 cal of heat flows through thr rod in 2min . Now the rods are welded as shown in figure (b). The time it would take for 10 cal to flow through the rods now, is

Two identical square rods of metal are welded end to end as shown in figure (a). Assume that 10 cal of heat flows through thr rod in 2min . Now the rods are welded as shown in figure (b). The time it would take for 10 cal to flow through the rods now, is

Two identical metal plates are welded end to end as shown in - (i) . 20 cal of heat flows through it in 4 minutes. If the plates are welded as shown in figure-(ii) , find the time (in minutes) taken by the same amount of heat to flow through the plates.