Chapter 17 – Thermal Properties of Matter
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When 1kg of ice at 0∘C melts to water at 0∘C, the resulting change in its entropy, taking latent heat of ice to be 80cal/ C is.
31
Aug
When 1kg of ice at 0∘C melts to water at 0∘C, the resulting change in its entropy, taking latent heat of ice to be 80cal/ C is. taking latent heat of ice to be 80cal/ C is. the resulting change in its entropy When 1kg of ice at 0∘C melts to water at 0∘C August [...]
The unit of thermal conductivity is
31
Aug
The unit of thermal conductivity is The unit of thermal conductivity is August 31, 2020 Category: Chapter 17 - Thermal Properties of Matter , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
The two ends of a metal rod are maintained at temperature 100 C and 110C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200C and 210C, the rate of heat flow will be
31
Aug
The two ends of a metal rod are maintained at temperature 100 C and 110C. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200C and 210C, the rate of heat flow will be the rate of heat flow will be The two [...]
Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm. The rate of heating is constant. Which of the following graphs represents the variation of temperature with time?
31
Aug
Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm. The rate of heating is constant. Which of the following graphs represents the variation of temperature with time? Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm. The rate of heating is [...]
Steam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be [Take specific heat of water = 1 cal g^-1°C^-1 and latent heat of steam = 540 cal g^-1]
31
Aug
Steam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the mass of water present will be [Take specific heat of water = 1 cal g^-1°C^-1 and latent heat of steam = 540 cal g^-1] Steam at 100°C is passed into 20 g of water at [...]
A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4 × 10^5J/kg and g = 10N/kg]:
31
Aug
A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4 × 10^5J/kg and g = 10N/kg]: A [...]
The coefficient of linear expansion of brass and steel are α1 and α2. If we take a brass rod of length l1 and steel rod of length l2 at 0 degree C and their difference in length (l2 − l1) will remain the same at all temperatures if
26
Aug
The coefficient of linear expansion of brass and steel are α1 and α2. If we take a brass rod of length l1 and steel rod of length l2 at 0 degree C and their difference in length (l2 − l1) will remain the same at all temperatures if Wien's displacement law expresses relation between August [...]
The temperature of the sun is doubled, the rate of energy received on earth will be increased by a factor of :
26
Aug
The temperature of the sun is doubled, the rate of energy received on earth will be increased by a factor of : the rate of energy received on earth will be increased by a factor of : The temperature of the sun is doubled August 26, 2020 Category: Chapter 17 - Thermal Properties of Matter [...]
A black body is at temperature of 500 K. It emits energy at rate which is proportional to
26
Aug
A black body is at temperature of 500 K. It emits energy at rate which is proportional to A black body is at temperature of 500 K. It emits energy at rate which is proportional to August 26, 2020 Category: Chapter 17 - Thermal Properties of Matter , NEET Last 32 Years Solved 1988 - [...]
The radiant energy from the sun, incident normally at the surface of earth, is 20 kcal/m 2 min. What would have been the radiant energy incident normally on the earth, if the sun had a temperature twice of the present one?
26
Aug
The radiant energy from the sun, incident normally at the surface of earth, is 20 kcal/m 2 min. What would have been the radiant energy incident normally on the earth, if the sun had a temperature twice of the present one? if the sun had a temperature twice of the present one? incident normally at [...]