Home
Class 12
PHYSICS
Three rods of same dimensions have therm...

Three rods of same dimensions have thermal condutivity `3K,2K` and `K` They are arranged as shown in Then the temperature of the junction in steady state is
.

A

`200/3""^(@)C`

B

`100/(3)""^(@)C`

C

`75^(@)C`

D

`8/1""^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
A

Rate of flow of heat,
`H=H+H_(2)`
Using `H=(KA(T_(1)-T_(2)))/(L)`
`(3K(T-100)A)/(L)=(2K(50-T)A)/(L)+(K(0-T)A)/(L)`
`3(T-100)=2(50-Y)+(0-T)`
`6T=400`
`T=400/(6)=200/(3)""^(@)C`
Promotional Banner

Topper's Solved these Questions

  • THERMAL PROPERTIES OF MATTER

    PHYSICS WALLAH|Exercise Level- 2|30 Videos

  • THERMAL PROPERTIES OF MATTER

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|12 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |22 Videos

  • THERMODYNAMICS

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|14 Videos

Similar Questions

Explore conceptually related problems

Three rods of the same dimension have thermal conductivity 3K , 2K and K. They are arranged as shown in the figure below Then , the temperature of the junction in steady - state is

Three rods of the same dimension have thermal conductivity 3K, 2K and K as shown in the figure. The temperature of the junction in steady-state is

Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in fig. Given below, with their ends at 100^(@)C, 50^(@)C and 20^(@)C . The temperature of their junction is :-

Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in fig. with their ends at 100^(@)"C", 50^(@)"C and "20^(@)"C" . The temperature of their junction is

Three rods of the same dimensions have thermal conductivities 3 k , 2 k and k . They are arranged as shown, with their ends at 100^(@)C, 50^(@)C and 0^(@)C . The temperature of their junction is :-

Three rods of same dimensions have thermal conductivities 3K, 2k and K, with their ends at 100^@C , 50^@C and 0^@C respectively . They re arranged as shown in the diagram . The temperature of the junction J in steady -state is

Two rods of similar area of cross section and length are joined as shown in the figure. The ratio of their thermal conductivity is 2:3. The free ends are maintained at 100^(@)C and 0^(@)C respectivley. THE temperature at junction in steady state is

Three rods of same dimension are joined in series having thermal conductivity k_1 , k_2 and k_3 . The equivalent thermal conductivity is

Four rods identical in all respect other than their thermal conductivity are joined to form a square loop.The thermal conductivity of rods are shown in the figure.The ratio of temperatures of point A and B (in steady state) is (k)/(35) . Find the value of k. Other two ends are maintained at 100^(@)C and 20^(@)C