Physics
Which of the following is not thermodynamical function ?
26
Aug
Which of the following is not thermodynamical function ? Which of the following is not thermodynamical function ? August 26, 2020 Category: Chapter 18 - Thermodynamics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
110 Joules of heat are added to a gaseous system, whose internal energy is 40 J, then the amount of external work done is :
26
Aug
110 Joules of heat are added to a gaseous system, whose internal energy is 40 J, then the amount of external work done is : 110 Joules of heat are added to a gaseous system then the amount of external work done is : whose internal energy is 40 J August 26, 2020 Category: Chapter [...]
We consider a thermodynamic system. If ΔU represents the increase in its internal energy and W the work done by the system, which of the following statements is true?
26
Aug
We consider a thermodynamic system. If ΔU represents the increase in its internal energy and W the work done by the system, which of the following statements is true? We consider a thermodynamic system. If ΔU represents the increase in its internal energy and W the work done by the system which of the following [...]
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 [...]
The wavelength corresponding to maximum intensity of radiation emitted by a source at temperature 2000 K is λ. then what is the wavelength corresponding to maximum intensity of radiation at temperature 3000 K ?
26
Aug
The wavelength corresponding to maximum intensity of radiation emitted by a source at temperature 2000 K is λ. then what is the wavelength corresponding to maximum intensity of radiation at temperature 3000 K ? The unit of Stefan's constant is August 26, 2020 Category: Chapter 17 - Thermal Properties of Matter , NEET Last 32 [...]
Which of the following is close to an ideal black body ?
26
Aug
Which of the following is close to an ideal black body ? Which of the following is close to an ideal black body ? August 26, 2020 Category: Chapter 17 - Thermal Properties of Matter , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
Wien’s displacement law expresses relation between
26
Aug
Wien’s displacement law expresses relation between Wien's displacement law expresses relation between August 26, 2020 Category: Chapter 17 - Thermal Properties of Matter , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,