Home
Class 10
PHYSICS
A body of length 1m having cross section...

A body of length 1m having cross sectional area `0.80 m^2` has heat flow through it at the rate of `8000` `J``/``sec`. Then find the temperature difference if `K = 200 Jm^-1K^-1`

A

20°C

B

40°C

C

50°C

D

100°C

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • HEAT

    CHETAN PUBLICATION|Exercise Complete the analogy:|5 Videos
  • HEAT

    CHETAN PUBLICATION|Exercise Answer in one sentence :|20 Videos
  • GRAVITATION

    CHETAN PUBLICATION|Exercise ASSIGNMENT-1|15 Videos
  • LENSES

    CHETAN PUBLICATION|Exercise Assignment|14 Videos

Similar Questions

Explore conceptually related problems

A body of length 1m having cross sectional area 0.75 m^2 has heat flow through it at the rate of 6000 Joule / sec . Then find the temperature difference if K = 200 Jm^-1K^-1

A heat flux of 4000 J/s is to be passed through a copper rod of length 10 cm and area of cross-section 100 cm^2 . The thermal conductivity of copper is 400 W/m/ °C. The two ends of this rod must be kept at a temperature difference of

An aluminium rod and a copper rod of equal length 1.0 m and cross-sectional area. 1cm^(2) are welded together as shown in figure. One end is kept at a temperature of 20^(@)C and the other at 60^(@)C Calculate the amount of heat taken out per second from the hot end. thermal conductivity of aluminium =200Wm^(-1)C^(-1) and of copper =390Wm^(-1)C^(-1) .

A metal rod of cross sectional area 1.0cm^(2) is being heated at one end. At one time , the temperature gradient is 5.0^(@)C cm^(-1) at cross section A and is 2.5^(@)Ccm^(-1) at cross section B. calculate the rate at which the temperature is increasing in the part AB of the rod. The heat capacity of the part AB =0.40J^(@)C^(-1) , thermal conductivity of the material of the rod. K=200Wm^(-1)C^(-1) . Neglect any loss of heat to the atmosphere.

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

Figure shows a large tank of water at a constant temperature theta_(0) and a small vessel containing a mass m of water at an initial temperature theta_1 (lt theta_(0)) . A metal rod of length L , area of cross section A and thermal conductivity K connects the two vessels. Find the time taken for the temperature of the water in the smaller vessel to become theta_(2) (theta_(1)lt theta_(2)lt theta_(0)) . Specific heat capacity of water is s and all other heat capacities are negligible.

Two rods of same length and cross section are joined along the length. Thermal conductivities of first and second rod are K_1 and K_2 . The temperature of the free ends of the first and second rods are maintained at θ_1 and θ_2 respectively. The temperature of the common junction is

A negligible small current is pass through a wire of length 15m and uniform cross section 6xx10^(-7)m^(2) and its resistance is measured to be 5Omega . What is the resistivity of the material at the temperature of the experiment ?

A steel frame (K=45Wm^(-1)C^(-1)) of total length 60cm and cross sectional area 0.2cm^(2) , Forms three side of a square. The free ends are maintained at 20^(@)C and 40^(@)C . Find the rate of heat flow through a cross section of the frame.