You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Conductance of Electrolytic Solution

Two rods of e...

Question

Two rods of equal length and area of cross-section are connected in parallel between temperatures $20^{0} C a n d 80^{0} C$ . If ratio of their thermal conductivities is 3:4,then the ratio of the effective thermal conductivity to that of the first rod thermal conductivity is

7:4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

7:6

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

4:7

No worries! We‘ve got your back. Try BYJU‘S free classes today!

7:8

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
7:6

$K_{p} = \frac{k_{1} + k_{2}}{2}$ ;Kp:K1= 7:6

Suggest Corrections

Similar questions

Q. Two rods of length

l

and

2 l

with thermal conductivities

2 K

and

K

respectively are connected end to end. If cross sectional areas of two rods are equal, then equivalent thermal conductivity of the system is :

Q. Two rods of length

ℓ

and

2 ℓ

thermal conductivities

2 K

and

K

are connected end to end. If cross sectional areas of two rods are equal, then equivalent thermal conductivity of the system is

Q. Two rods having same length and cross-sectional area are connected individually between temperature

T_{1}

and

T_{2}

. If the rate of loss of heat due to condution is equal and specific heat of two rods are in the ratio

1 : 2

, then the ratio of their thermal conductivity will be

The ratio of thermal conductivity of two rods of different material is 5 : 4. The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratio

Q. The ratio of the areas of cross-section of two rods of different materials is

1 : 2

, and the ratio of the thermal conductivities of their materials is

4 : 3

. On keeping equal temperature difference between the ends of these rods, the rate of conduction of heat are equal. The ratio of the lengths of the rods is

Join BYJU'S Learning Program

Two rods of equal length and area of cross-section are connected in parallel between temperatures 200C and 800C . If ratio of their thermal conductivities is 3:4,then the ratio of the effective thermal conductivity to that of the first rod thermal conductivity is

The correct option is B 7:6 Kp=k1+k22 ;Kp:K1= 7:6

Two rods of equal length and area of cross-section are connected in parallel between temperatures $20^{0} C a n d 80^{0} C$ . If ratio of their thermal conductivities is 3:4,then the ratio of the effective thermal conductivity to that of the first rod thermal conductivity is

The correct option is B
7:6

$K_{p} = \frac{k_{1} + k_{2}}{2}$ ;Kp:K1= 7:6