Physics-
General
Easy
Question
The graph shown give the temperature along x-axis that extends directly through a wall consisting of three layers A, B and C. The air temperature on one side of the wall differ from that on the other side. Thermal conduction through the wall is steady. Out of the three layers A, B and C thermal conductivity is greatest for layer
- A
- B
- C
- All have same
The correct answer is: B
Related Questions to study
Physics-
No heat flows through the central rod of conductivity in the arrangement of five identical rods of different conductivity and Temperature are constant at and at then
No heat flows through the central rod of conductivity in the arrangement of five identical rods of different conductivity and Temperature are constant at and at then
Physics-General
Physics-
Three - rods AB, BC and BD made of the same cross-section have been joined as shown in figure. The ends A, C and D are held at temperatures of 20°C, 80°C, and 80°C respectively . If each rod is of same length, then the temperature at the junction B of the three rods is :
Three - rods AB, BC and BD made of the same cross-section have been joined as shown in figure. The ends A, C and D are held at temperatures of 20°C, 80°C, and 80°C respectively . If each rod is of same length, then the temperature at the junction B of the three rods is :
Physics-General
Physics-
Two slabs A & B having lengths and , respectively, and same cross - section have thermal conductivities and respecitvely. They are placed in contact and a constant temperature difference is maintained across the combination. The ratio of the quantities of heat flowing through A and B in a given time is
Two slabs A & B having lengths and , respectively, and same cross - section have thermal conductivities and respecitvely. They are placed in contact and a constant temperature difference is maintained across the combination. The ratio of the quantities of heat flowing through A and B in a given time is
Physics-General
Physics-
The rate of emission of radiation of a black body at temperature 27°C is If its temperature is increased to 327°C the rate of emission of radiation is The relation between and is
The rate of emission of radiation of a black body at temperature 27°C is If its temperature is increased to 327°C the rate of emission of radiation is The relation between and is
Physics-General
Physics-
A gas is expanded from volume to 2 under three different processes. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let and , be the change in internal energy of the gas is these processes. Then :–
A gas is expanded from volume to 2 under three different processes. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let and , be the change in internal energy of the gas is these processes. Then :–
Physics-General
Physics-
From the following V–T diagram we can conclude:–
From the following V–T diagram we can conclude:–
Physics-General
Physics-
Four containers are filled with monoatomic ideal gases. For each container, the number of moles, the mass of an individual atom and the rms speed of the atoms are expressed in terms of n, m and respectively. If and are their temperatures respectively then which one of the options correctly represents the order ?
Four containers are filled with monoatomic ideal gases. For each container, the number of moles, the mass of an individual atom and the rms speed of the atoms are expressed in terms of n, m and respectively. If and are their temperatures respectively then which one of the options correctly represents the order ?
Physics-General
Physics-
Two identical glass bulbs are interconnected by a thin glass tube at . A gas is filled at N.T.P. in these bulb is placed in ice and another bulb is placed in hot bath, then the pressure of the gas becomes 1.5 times. The temperature of hot bath will be :–
Two identical glass bulbs are interconnected by a thin glass tube at . A gas is filled at N.T.P. in these bulb is placed in ice and another bulb is placed in hot bath, then the pressure of the gas becomes 1.5 times. The temperature of hot bath will be :–
Physics-General
Physics-
The expansion of unit mass of a perfect gas at constant pressure is shown in the diagram. Here:–
The expansion of unit mass of a perfect gas at constant pressure is shown in the diagram. Here:–
Physics-General
Physics-
Pressure versus temperature graphs of an ideal gas are as shown in figure. Choose the wrong statement:–
Pressure versus temperature graphs of an ideal gas are as shown in figure. Choose the wrong statement:–
Physics-General
Physics-
Two different rods A and B are kept as shown in figure. The variation of temperature of different cross sections with distance is plotted in a graph shown in figure. The ratio of thermal conductivities of A and B is
Two different rods A and B are kept as shown in figure. The variation of temperature of different cross sections with distance is plotted in a graph shown in figure. The ratio of thermal conductivities of A and B is
Physics-General
Physics-
Three rods of the same dimensions have thermal conductivities and . They are arranged as shown, with their ends at , and . The temperature of their junction is
Three rods of the same dimensions have thermal conductivities and . They are arranged as shown, with their ends at , and . The temperature of their junction is
Physics-General
Physics-
Bars of two different metals are bolted together, as shown in figure. The distance x does not change with temperature if:–
Bars of two different metals are bolted together, as shown in figure. The distance x does not change with temperature if:–
Physics-General
Physics-
The variation of lengths of two metal rods A and B with change in temperature is shown in figure. The ratio of A B is:–
The variation of lengths of two metal rods A and B with change in temperature is shown in figure. The ratio of A B is:–
Physics-General
Physics-
In a vertical U-tube containing a liquid, the two arms are maintained at different temperature and . The liquid columns in the two arms have heights and respectively. The coefficient of volume expansion of the liquid is equal to
In a vertical U-tube containing a liquid, the two arms are maintained at different temperature and . The liquid columns in the two arms have heights and respectively. The coefficient of volume expansion of the liquid is equal to
Physics-General