Home
Class 12
PHYSICS
Two plates of equal areas are placed in ...

Two plates of equal areas are placed in contact wih each other. Their thickness are 2.0 cm and 5.0 cm respectively. The temperature of the external surface of the first plate is `-20^(@)C` and that of the external surface of the second plate is `20^(@)C`. What will be the temperature of the current surface if the plates (i) are of the same material, (ii) have thermal conductivities in the ratio `2:5`.

Text Solution

AI Generated Solution

To solve the problem, we will follow these steps: ### Given: - Plate 1 thickness (L1) = 2.0 cm = 0.02 m - Plate 2 thickness (L2) = 5.0 cm = 0.05 m - Temperature of Plate 1 (T1) = -20°C - Temperature of Plate 2 (T2) = 20°C ...
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    ALLEN|Exercise SOME WORKED OUT EXAMPLES|83 Videos

  • GEOMETRICAL OPTICS

    ALLEN|Exercise EXERCISE -01|65 Videos

  • CURRENT ELECTRICITY

    ALLEN|Exercise EX.II|66 Videos

  • GRAVITATION

    ALLEN|Exercise EXERCISE 4|9 Videos

Similar Questions

Explore conceptually related problems

Two plates of equal area are placed in contact with each other. The thickness of the plates are 2.0 cm and 3.0 cm respectively. The outer face of first plate is at -25^(@) C and that of second plate is at +25^(@) C . The conductivities of the plates are in the ratio 2:3 . Calculate the temperature of the common surface of the plates.

Two plates of same area are placed in contact. Their thickness as well as thermal conductivities are in the ratio 2:3 . The outer surface of one plate is maintained at 10^(@) C and that of the other at 0^(@) C. What is the temperature at the common surface?

The length and breadth of a plate are (6 pm 0.1) cm and (4 pm 0.2)cm respectively. The area of the plate is

Surface plates of earth are made of

Two parallel air capacitors have their plate areas 100 cm^2" and "500 cm^2 , respectively. If they have the same charge and potential, and the distance between the plates of the first capacitor is 0.5 mm, what is the distance between the plates of the second capacitor?

Two parallel plates A and B are joined together to form a compound plate . The thicknesses of the plate are 4.0cm and 2.5cm respectively and the area of cross section is 100cm^(2) for each plate. The thermal conductivities are K_(A)=200Wm^(-1) C^(-1) for plate A and K_(B)=400Wm^(-1) C^(-1) for the plate B. The outer surface of the plate A is maintained at 100^(@)C and the outer surface of the plate B is maintained at 0^(@)C . Find (a) the rate of heat flow through any cross section, (b) the temperature at the interface and (c) the equivalent thermal conductivity of the compound plate.

The plates of a parallel-plate capacior are given equal positive charges .What will be the potential difference between the plates ? What will be the charges on the facing surfaces and on the outer surfaces ?

Two large conducting plates are placed parallel to each other with a separation of 2.00 cm betweeen them. An electron starting from rest near one of the plates reaches the other plate in 2.00 microseconds. Find the surface charge density on the inner surfaces.

The capacitance between the adjacent plates shown in figure (31-E20 ) is 50 nF . A charge of 1.0muC is placed on the middle plate (a )What will be the charge on the outer surface pf the upper plate ? (b ) Find the potential difference developed between the upper and the middle plates .

The cathode of a diode valve is replaced by another cathode of double the surface area. Keeping the voltage and temperature conditions the same, will the plate current decrease, increase or remain the same?