Home
Class 10
PHYSICS
The thermal conductivity of a material i...

The thermal conductivity of a material in CGS system is 0.4. In steady state, the rate of flow of heat 10 cal/sec-cm, then the thermal gradient will be

A

10°C/ cm

B

12°C/ cm

C

25°C/ cm

D

20°C/ cm

Text Solution

Verified by Experts

The correct Answer is:
c
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 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

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

The density of material in CGS system of units is 4gcm^(-3) . In a system of units in which unit of length is 10 cm and unit of mass is 100 gm, then the value of density of material will be

The coefficient of thermal conductivity of copper is nine times that of steel. One end of copper is maintained at 100°C and the other end of steel is maintained at 0°C. If the corresponding lengths of the copper and iron are 18cm and 6cm respectively, What will be the temperature at the junction of copper and steel ?

A uniform slab of dimension 10cmxx10cmxx1cm is kept between two heat reservoir at temperatures 10^(@)C and 90^(@)C . The larger surface areas touch the reservoirs. The thermal conductivity of the material is 0.80Wm^(-1)C^(-1) . Find the amount of heat flowing through the slab per minute.

A hole of radius r_(1) is made centrally in a uniform circular disc of thickness d and radius r_(2) . The inner surface (a cylinder of length d and radius r_(1) ) is maintained at a temperature theta_(1) and the outer surface (a cylinder of length d and radius r_(2) ) is maintained at a temperature theta_(2)(theta_(1)gttheta_(2)) .The thermal conductivity of the material of the disc is K. Calculate the heat flowing per unit time through the disc.