Thermal Properties of Matter questions
823 published questions with worked solutions.
- The identical metal spheres (of same surface area) have red, black and white colors and they are heated upto same temperature....
- At certain temperature, rod A and rod B of different materials have L_A and L_B respectively. Their coefficients of linear...
- A black body radiates maximum energy at wavelength and its emissive power is 'E'. Now due to change in temperature of that body,...
- A metal rod 2m long increases in length by 1.6 mm, when heated from 0^ C to 60^ C. The coefficient of linear expansion of metal...
- A piece of metal at 850 K is dropped in to 1 kg water at 300K. If the equilibrium temperature of water is 350 K then the heat...
- A black body radiates maximum energy at wavelength ' ' and its emissive power is E. Now due to change in temperature of that...
- A cylindrical rod is having temperatures _1 and _2 at its ends. The rate of heat flow is Q J/s . all the linear dimensions of the...
- A black sphere has radius R whose rate of radiation is E at temperature T. If radius is made half and temperature 4T, the rate of...
- Ordinary bodies P and Q radiate maximum energy with wavelength difference 3 . The absolute temperature of body P is four times...
- A lead bullet moving with velocity 'V' strikes a wall and stops. If 75% of its energy is converted into heat, then the increase...
- Two metal rods P and Q have same length and same temperature difference between their ends. Their thermal conductivities are K_1...
- Two bodies A and B radiate maximum energy with wavelength difference 4 . The absolute temperature of body A is 3 times that of B....
- Three black discs x, y, z have radii 1 m, 2 m and 3 m respectively. The wavelength corresponding to maximum intensity are 200 nm,...
- The coefficient of thermal conductivity of a rod depends on its
- At 273^ , the emissive power of a perfect black body is 'R'. Its emissive power at 0^ is
- A body cools in 7 minutes from 60^oC to 40^oC. What time (in minutes) does it take to cool from 40^oC to 28^oC, if the...
- The energy spectrum of a black body exhibits a maximum of wavelength _0. The temperature of the black body is now changed such...
- The difference in length between two rods A and B is 60 cm at all temperatures. If _A= 18 x 10^ -6 / °C and _B=27 x 10^ -6 /°C,...
- A metal rod having coefficient of linear expansion 2 10^ -5 ,/ ^ is 0.75 m long at 45^ . When the temperature rises to 65^ , the...
- Rails of material of steel are laid with gaps to allow for thermal expansion. Each track is 10 m log, when laid at temperature...
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