Home
Class 11
PHYSICS
Two identical square rods of metal are w...

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

A

`0.75 min`

B

`0.5 min`

C

`1.5 min`

D

`1 min`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • HEAT TRANSFER

    RESONANCE ENGLISH|Exercise Exercise-3|1 Videos

  • HEAT TRANSFER

    RESONANCE ENGLISH|Exercise Advancel Level Problems|17 Videos

  • HEAT TRANSFER

    RESONANCE ENGLISH|Exercise Exercise|91 Videos

  • GRAVITATION

    RESONANCE ENGLISH|Exercise Exercise|21 Videos

  • KINEMATICS

    RESONANCE ENGLISH|Exercise Exercise|65 Videos

Similar Questions

Explore conceptually related problems

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 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.

Find the rate of heat flow through a cross section of the rod shown in figure (theta_(2)gttheta_(1)) . Thermal conductivity of the material of the rod is K.

Three identical rods are joined at point O as shown in the figure. In the steady state, fid the ratio of thermal current through rod AO and OC.

Two similar rods are joined as shown in figure. Then temperature of junction is (assume no heat loss through lateral surface of rod and temperatures at the ends are shown in steady state )

Four identical heat conductors are connected as shown in the figure. The temperature theta of the junction is [rods are insulated from the sides ]

A rod of length l slided down along the inclined wall as shown in figure. At the instant shown in figure, the speed of end A is v, then the speed of B will be

Two identical uniform rods AB and CD, each of length L are jointed to form a T-shaped frame as shown in figure. Locate the centre of mass of the frame. The centre of mass of a uniform rod is at the middle point of the rod.

A rod is heated at one end as shown in figure. In steady state temperature of different sections becomes constant but not same. Why so? .

Statement 1: A direct current flows through a metallic rod. It produces magnetic field only outside the rod. Statement 2: The charge carries flow through whole of the cross section.