Home
Class 10
PHYSICS
The ratio of thermal conductivity of two...

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

A

4:5

B

9:1

C

1:9

D

5:4

Text Solution

Verified by Experts

The correct Answer is:
d
Promotional Banner

Topper's Solved these Questions

  • HEAT

    CHETAN PUBLICATION|Exercise Match the columns:|3 Videos

  • HEAT

    CHETAN PUBLICATION|Exercise State whether following statement are True or False. If false; rectify the statement.|18 Videos

  • HEAT

    CHETAN PUBLICATION|Exercise Complete the analogy:|5 Videos

  • GRAVITATION

    CHETAN PUBLICATION|Exercise ASSIGNMENT-1|15 Videos

  • LENSES

    CHETAN PUBLICATION|Exercise Assignment|14 Videos

Similar Questions

Explore conceptually related problems

The ends of two rods of different materials with their thermal conductivities, radii of cross sections and lengths all in the ratio 1 : 2 are maintained at the same temperature difference, if the rate of flow of heat in the larger rod is 4 cal/ sec, the rate of flow of heat in the shorter rod will be

Two copper wires of length 1m and 9m have equal resistances. Then their diameters are in the ratio:

The specific resistance of the material of a conductor of length 3m area of cross-section 0.2 "mm"^2 having a resistance of 2 ohm is:

The ratio of the diameters of two metallic rods of the same material is 2 : 1 and their lengths are in the ratio 1 : 4. If the temperature difference between their ends are equal, the rate of flow of heat in them will be in the ratio

The radii of two rods of the same length and same material are in the ratio of 1:2. If these rods are twisted by applying the same torsional torque, then find the ratio of the angle of twist produced in the two rods.

The radii of two rods of the same length and same material are in the ratio of 1:2. If these rods are twisted by applying the same torsional torque, then find the ratio of the angle of twist produced in the two rods.

Two rectangular blocks A and B of different metals have same length and same area of cross-section. They are kept in such a way that their cross-sectional area touch each other. The temperature at one end of A is 100°C and that of B at the other end is 0°C. If the ratio of their thermal conductivity is 1 : 3, then under steady state, the temperature of the junction in contact will be

The heat is flowing through two cylindrical rods of same material. The diameters of the rods are in the ratio 1:2 and their lengths are in the ratio 2:1. If the temperature difference between their ends is the same, the ratio of rate of flow of heat through them will be

The length of the two rods made up of the same metal and having the same area of cross-section are 0.6 m and 0.8 m respectively. The temperature between the ends of first rod is 90º C and 60° C and that for the other rod is 150°C and 110° C. For which rod the rate of conduction will be greater ?