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A room is maintained at 20 C by a heater of resistance 20 ohm connected to 200 volt mains. The temperature is uniform throughout the room and heat is transmitted through a glass
25
Oct
A room is maintained at 20 C by a heater of resistance 20 ohm connected to 200 volt mains. The temperature is uniform throughout the room and heat is transmitted through a glass A room is maintained at 20 C by a heater of resistance 20 ohm connected to 200 volt mains. The temperature is [...]
A composite metallic bar of uniform cross-section is made up of length 25 cm of copper, 10 cm of nickel and 15 cm of aluminium, each part being in perfect thermal contact with the adjoining part.
25
Oct
A composite metallic bar of uniform cross-section is made up of length 25 cm of copper, 10 cm of nickel and 15 cm of aluminium, each part being in perfect thermal contact with the adjoining part. 10 cm of nickel and 15 cm of aluminium A composite metallic bar of uniform cross-section is made up [...]
Five identical rods are joined as shown in figure. Point A and C are maintained at temperature 120 C and 20 C respectively. The temperature of junction B will be
25
Oct
Five identical rods are joined as shown in figure. Point A and C are maintained at temperature 120 C and 20 C respectively. The temperature of junction B will be Five identical rods are joined as shown in figure. Point A and C are maintained at temperature 120 C and 20 C respectively. The temperature [...]
Three rods of same dimensions are arranged as shown in figure. They have thermal conductivities K1, K2 and K3. Points P and Q are maintained at different temperatures for the heat
25
Oct
Three rods of same dimensions are arranged as shown in figure. They have thermal conductivities K1, K2 and K3. Points P and Q are maintained at different temperatures for the heat K2 and K3. Points P and Q are maintained at different temperatures for the heat Three rods of same dimensions are arranged as shown [...]
Four identical rods of same material are joined end to end to form a square. If the temperature difference between the ends of a diagonal is 100 C, then the temperature difference
25
Oct
Four identical rods of same material are joined end to end to form a square. If the temperature difference between the ends of a diagonal is 100 C, then the temperature difference Four identical rods of same material are joined end to end to form a square. If the temperature difference between the ends of [...]
Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in figure given below, with their ends at 100 C, 50 C and 20 c. The temperature
25
Oct
Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in figure given below, with their ends at 100 C, 50 C and 20 c. The temperature 2K and K. They are arranged as shown in figure given below 50 C and 20 c. The temperature Three [...]
In a steady state of thermal conduction, temperature of the ends A and B of a 20 cm long rod are 100 c and 0 C, respectively. What will be the temperature of the rod at a point
25
Oct
In a steady state of thermal conduction, temperature of the ends A and B of a 20 cm long rod are 100 c and 0 C, respectively. What will be the temperature of the rod at a point In a steady state of thermal conduction respectively. What will be the temperature of the rod at [...]
A metallic rod of length 2 m has cross-sectional area 2A and A as shown in figure. The ends are maintained at temperatures 100 C and 70 C. The temperature at middle point C is
25
Oct
A metallic rod of length 2 m has cross-sectional area 2A and A as shown in figure. The ends are maintained at temperatures 100 C and 70 C. The temperature at middle point C is A metallic rod of length 2 m has cross-sectional area 2A and A as shown in figure. The ends are [...]
Two spheres of different materials one with double the radius and one-fourth wall thickness of the other, are filled with ice. If the time taken for melting complete ice in the larger
25
Oct
Two spheres of different materials one with double the radius and one-fourth wall thickness of the other, are filled with ice. If the time taken for melting complete ice in the larger are filled with ice. If the time taken for melting complete ice in the larger Two spheres of different materials one with double [...]
The ends of two rods of different materials with their thermal conductivities, radii of cross-sections and lengths all are in the ratio 1 : 2 are maintained at the same temperature difference.
25
Oct
The ends of two rods of different materials with their thermal conductivities, radii of cross-sections and lengths all are in the ratio 1 : 2 are maintained at the same temperature difference. radii of cross-sections and lengths all are in the ratio 1 : 2 are maintained at the same temperature difference. The ends of [...]