Physics
The internal energy change in a system that has absorbed 2 Kcal of heat and done 500 J of work is:
31
Aug
The internal energy change in a system that has absorbed 2 Kcal of heat and done 500 J of work is: The internal energy change in a system that has absorbed 2 Kcal of heat and done 500 J of work is: August 31, 2020 Category: Chapter 18 - Thermodynamics , NEET Last 32 Years [...]
A sample of 0.1 g of water at 100 degree C and normal pressure (1.013 × 105 Nm^−2) requires 54 cal of heat energy of convert to steam at 100 degree C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is
31
Aug
A sample of 0.1 g of water at 100 degree C and normal pressure (1.013 × 105 Nm^−2) requires 54 cal of heat energy of convert to steam at 100 degree C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is A sample of 0.1 [...]
If Delta U and Delta W represent the increase in internal energy and work done by the system respectively in a thermodynamic process, which of the following is true?
31
Aug
If Delta U and Delta W represent the increase in internal energy and work done by the system respectively in a thermodynamic process, which of the following is true? If Delta U and Delta W represent the increase in internal energy and work done by the system respectively in a thermodynamic process Which of the [...]
The value of coefficient of volume expansion of glycerin is 5 × 10^−4 K^−1 The fractional change in the density of glycerin for a rise of 40 degree C in its temperature is:-
31
Aug
The value of coefficient of volume expansion of glycerin is 5 × 10^−4 K^−1 The fractional change in the density of glycerin for a rise of 40 degree C in its temperature is:- The value of coefficient of volume expansion of glycerin is 5 × 10^−4 K^−1 The fractional change in the density of glycerin [...]
A black body at 1227 degree C emits radiations with maximum intensity at a wavelength of 5000 A˚. The temperature of the body is increased by 1000 degree C, the maximum intensity will be observe at:-
31
Aug
A black body at 1227 degree C emits radiations with maximum intensity at a wavelength of 5000 A˚. The temperature of the body is increased by 1000 degree C, the maximum intensity will be observe at:- A black body at 1227 degree C emits radiations with maximum intensity at a wavelength of 5000 A˚. The [...]
Assuming the sun to have a spherical outer surface of radius r radiating like a black body at temperature t degree C. The power received by a unit surface (normal to the incident rays) at a distance R from the centre of the sun is where sigma is the Stefan’s constant.
31
Aug
Assuming the sun to have a spherical outer surface of radius r radiating like a black body at temperature t degree C. The power received by a unit surface (normal to the incident rays) at a distance R from the centre of the sun is where sigma is the Stefan’s constant. A piece of iron [...]
A black body is at 727 degree C. It emits energy at a rate which is proportional to
31
Aug
A black body is at 727 degree C. It emits energy at a rate which is proportional to A black body is at 727 degree C. It emits energy at a rate which is proportional to August 31, 2020 Category: Chapter 17 - Thermal Properties of Matter , NEET Last 32 Years Solved 1988 - [...]
The power radiated by a black body is P and it radiates maximum energy at wavelength, λ0. If the temperature of the black body is now changed so that it radiates maximum energy at wavelength 4/3λ0, the power radiated by it becomes nP. The value of n is?
31
Aug
The power radiated by a black body is P and it radiates maximum energy at wavelength, λ0. If the temperature of the black body is now changed so that it radiates maximum energy at wavelength 4/3λ0, the power radiated by it becomes nP. The value of n is? The power radiated by a black body [...]
A black body at 227°C radiates heat at the rate of 7 cals/cm² s^1. At a temperature of 727°C, the rate of heat radiated in the same units will be
31
Aug
A black body at 227°C radiates heat at the rate of 7 cals/cm² s^1. At a temperature of 727°C, the rate of heat radiated in the same units will be A black body at 227°C radiates heat at the rate of 7 cals/cm² s^1. At a temperature of 727°C the rate of heat radiated in [...]
If the radius of a star R and it acts as a black body, what would be the temperature of the star, in which the rate of energy production is Q? (σ for stefan’s constant.)
31
Aug
If the radius of a star R and it acts as a black body, what would be the temperature of the star, in which the rate of energy production is Q? (σ for stefan’s constant.) If the radius of a star R and it acts as a black body in which the rate of energy [...]