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A liquid in a beaker has temperature theta (t) at time t and theta 0 is temperature of surroundings, then according to Newton’s law of cooling the correct graph between
25
Oct
A liquid in a beaker has temperature theta (t) at time t and theta 0 is temperature of surroundings, then according to Newton’s law of cooling the correct graph between A liquid in a beaker has temperature theta (t) at time t and theta 0 is temperature of surroundings then according to Newton's law of [...]
A long metallic bar is carrying heat from one of its ends to the other end under steady state. The variation of temperature theta along the length x of the bar from its hot end
25
Oct
A long metallic bar is carrying heat from one of its ends to the other end under steady state. The variation of temperature theta along the length x of the bar from its hot end A long metallic bar is carrying heat from one of its ends to the other end under steady state. The [...]
A cylindrical rod of length 50 cm and cross-sectional area 1 cm^2 is fitted between a large ice chamber at 0 C and an evacuated chamber maintained at 27 C as shown in figure.
25
Oct
A cylindrical rod of length 50 cm and cross-sectional area 1 cm^2 is fitted between a large ice chamber at 0 C and an evacuated chamber maintained at 27 C as shown in figure. A cylindrical rod of length 50 cm and cross-sectional area 1 cm^2 is fitted between a large ice chamber at 0 [...]
Let us assume that sun radiates like a black body with surface temperature at T0 = 6000 K and earth absorbs radiations coming from sun only. If both earth and sun are considered
25
Oct
Let us assume that sun radiates like a black body with surface temperature at T0 = 6000 K and earth absorbs radiations coming from sun only. If both earth and sun are considered Let us assume that sun radiates like a black body with surface temperature at T0 = 6000 K and earth absorbs radiations [...]
The given figure shows water in a container having 2.0 mm thick walls made of a material of thermal conductivity 0.50 W/m C. The container is kept in a melting ice bath at 0 C.
25
Oct
The given figure shows water in a container having 2.0 mm thick walls made of a material of thermal conductivity 0.50 W/m C. The container is kept in a melting ice bath at 0 C. The given figure shows water in a container having 2.0 mm thick walls made of a material of thermal conductivity [...]
A slab of stone of area 3600 cm^2 and thickness 10 cm is exposed on the lower surface to steam at 100 C. A block of ice at 0 C rests on the upper surface of the slab. If in 1 h
25
Oct
A slab of stone of area 3600 cm^2 and thickness 10 cm is exposed on the lower surface to steam at 100 C. A block of ice at 0 C rests on the upper surface of the slab. If in 1 h A slab of stone of area 3600 cm^2 and thickness 10 cm is [...]
A uniform rod of thermal conductivity of 65 J/m-s C is surrounded by an insulator on its sides. One of its ends is put in a furnace, while the other end is kept exposed. If the temperature
25
Oct
A uniform rod of thermal conductivity of 65 J/m-s C is surrounded by an insulator on its sides. One of its ends is put in a furnace, while the other end is kept exposed. If the temperature A uniform rod of thermal conductivity of 65 J/m-s C is surrounded by an insulator on its sides. [...]
When the centre of earth is at a distance of 1.6 * 10^11 m from the centre of sun, the intensity of solar radiation reaching at the earth’s surface is 2.4 kW/m^2. There is a spherical
25
Oct
When the centre of earth is at a distance of 1.6 * 10^11 m from the centre of sun, the intensity of solar radiation reaching at the earth’s surface is 2.4 kW/m^2. There is a spherical the intensity of solar radiation reaching at the earth's surface is 2.4 kW/m^2. There is a spherical When the [...]
The maximum in the energy distribution spectrum of the sun is at wavelength 4753 A and its temperature is 6050 K. What will be the temperature of the star (in K) whose energy
25
Oct
The maximum in the energy distribution spectrum of the sun is at wavelength 4753 A and its temperature is 6050 K. What will be the temperature of the star (in K) whose energy The maximum in the energy distribution spectrum of the sun is at wavelength 4753 A and its temperature is 6050 K. What [...]
A calorimeter of negligible heat capacity contains 100 g waters at 40 C. The water cools to 35 C in 5 minutes. If the water is now replaced by a liquid of same volume as that of water
25
Oct
A calorimeter of negligible heat capacity contains 100 g waters at 40 C. The water cools to 35 C in 5 minutes. If the water is now replaced by a liquid of same volume as that of water A calorimeter of negligible heat capacity contains 100 g waters at 40 C. The water cools to [...]