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Three rods of identical cross-sectional area and made from the same metal form the sides of an isosceles triangle ABC right angled at B. The points A and B are maintained at temperatures
25
Oct
Three rods of identical cross-sectional area and made from the same metal form the sides of an isosceles triangle ABC right angled at B. The points A and B are maintained at temperatures Three rods of identical cross-sectional area and made from the same metal form the sides of an isosceles triangle ABC right angled [...]
The earth receives on its surface radiation from the sun at the rate of 1400 W/m^2. The distance of the centre of the sun from the surface of the earth is 1.5 * 10^11 m and the radius
25
Oct
The earth receives on its surface radiation from the sun at the rate of 1400 W/m^2. The distance of the centre of the sun from the surface of the earth is 1.5 * 10^11 m and the radius The earth receives on its surface radiation from the sun at the rate of 1400 W/m^2. The [...]
A system receives heat continuously at the rate of 10 W per sq. unit area. The temperature of the system becomes constant at 70 C when the temperature of the surroundings is 30
25
Oct
A system receives heat continuously at the rate of 10 W per sq. unit area. The temperature of the system becomes constant at 70 C when the temperature of the surroundings is 30 A system receives heat continuously at the rate of 10 W per sq. unit area. The temperature of the system becomes constant [...]
Three rods AB, BC and BD of same length l and cross-sectional area A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0 C. The end C is maintained
25
Oct
Three rods AB, BC and BD of same length l and cross-sectional area A are arranged as shown. The end D is immersed in ice whose mass is 440 g and is at 0 C. The end C is maintained BC and BD of same length l and cross-sectional area A are arranged as shown. [...]
The top of insulated cylindrical container is covered by a disc having emissivity 0.6 and thickness 1 cm. The temperature is maintained by circulating oil as shown in figure. If temperature
25
Oct
The top of insulated cylindrical container is covered by a disc having emissivity 0.6 and thickness 1 cm. The temperature is maintained by circulating oil as shown in figure. If temperature The top of insulated cylindrical container is covered by a disc having emissivity 0.6 and thickness 1 cm. The temperature is maintained by circulating [...]
Power radiated by a black body is P0 and the wavelength corresponding to maximum energy is around lemda 0. On changing the temperature of the black body, it was observed
25
Oct
Power radiated by a black body is P0 and the wavelength corresponding to maximum energy is around lemda 0. On changing the temperature of the black body, it was observed it was observed Power radiated by a black body is P0 and the wavelength corresponding to maximum energy is around lemda 0. On changing the [...]
A refrigerator is thermally equivalent to a box of cork board 90 mm thick and 6 m^2 in inner surface area, the thermal conductivity of cork being 0.05 W/mK. The motor of the
25
Oct
A refrigerator is thermally equivalent to a box of cork board 90 mm thick and 6 m^2 in inner surface area, the thermal conductivity of cork being 0.05 W/mK. The motor of the A refrigerator is thermally equivalent to a box of cork board 90 mm thick and 6 m^2 in inner surface area the [...]
A rod of length l and cross-sectional area A has a variable conductivity given by K = alpha T, where alpha is a positive constant and T is temperature in kelvin. Two ends of the rod
25
Oct
A rod of length l and cross-sectional area A has a variable conductivity given by K = alpha T, where alpha is a positive constant and T is temperature in kelvin. Two ends of the rod A rod of length l and cross-sectional area A has a variable conductivity given by K = alpha T [...]
As shown in figure, AB is a rod of length 30 cm and area of cross-section 1.0 cm^2 and thermal conductivity 336 SI units. The ends A and B are maintained at temperatures 20 C and
25
Oct
As shown in figure, AB is a rod of length 30 cm and area of cross-section 1.0 cm^2 and thermal conductivity 336 SI units. The ends A and B are maintained at temperatures 20 C and AB is a rod of length 30 cm and area of cross-section 1.0 cm^2 and thermal conductivity 336 SI [...]
There are two thin spheres A and B of the same material and same thickness. They behave like black bodies. Radius of A is double that of B and both have same temperature T.
25
Oct
There are two thin spheres A and B of the same material and same thickness. They behave like black bodies. Radius of A is double that of B and both have same temperature T. There are two thin spheres A and B of the same material and same thickness. They behave like black bodies. Radius [...]