Physics
In which of the following process, heat is neither absorbed nor released by a system ?
31
Aug
In which of the following process, heat is neither absorbed nor released by a system ? heat is neither absorbed nor released by a system ? In which of the following process August 31, 2020 Category: Chapter 18 - Thermodynamics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , [...]
The volume (V) of a monatomic gas varies with its temperature (T) as shown in the graph. The ratio of work done by the gas, to the heat absorbed by it, when it undergoes a change from state A to state B,is.
31
Aug
The volume (V) of a monatomic gas varies with its temperature (T) as shown in the graph. The ratio of work done by the gas, to the heat absorbed by it, when it undergoes a change from state A to state B,is. is The volume (V) of a monatomic gas varies with its temperature (T) [...]
Thermodynamic process are indicated in the following diagram.
31
Aug
Thermodynamic process are indicated in the following diagram. Thermodynamic process are indicated in the following diagram. August 31, 2020 Category: Chapter 18 - Thermodynamics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
An ideal gas heat engine operates in Carnot cycle between 227°C and 127°C. It absorbs 6 x 10^4 cal of heat at higher temperature. Amount of heat converted to work is
31
Aug
An ideal gas heat engine operates in Carnot cycle between 227°C and 127°C. It absorbs 6 x 10^4 cal of heat at higher temperature. Amount of heat converted to work is An ideal gas heat engine operates in Carnot cycle between 227°C and 127°C. It absorbs 6 x 10^4 cal of heat at higher temperature. [...]
A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased so as to increase its efficiency by 50% of original efficiency?
31
Aug
A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased so as to increase its efficiency by 50% of original efficiency? A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature [...]
An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62°C, its efficiency is doubled. Temperatures of the source is
31
Aug
An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62°C, its efficiency is doubled. Temperatures of the source is An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62°C its efficiency is doubled. Temperatures of the source is August 31, 2020 Category: Chapter [...]
The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is -20 degree C, the temperature of the surroundings to which it rejects heat is :
31
Aug
The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is -20 degree C, the temperature of the surroundings to which it rejects heat is : The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is -20 degree C the temperature of the surroundings to which [...]
A Carnot engine, having an efficiency of n = 1/10 as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature
31
Aug
A Carnot engine, having an efficiency of n = 1/10 as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature A Carnot engine having an efficiency of n = 1/10 as heat engine is used as [...]
The temperature inside a refrigerator is t2C and the room temperature is t1C. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be
31
Aug
The temperature inside a refrigerator is t2C and the room temperature is t1C. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be The temperature inside a refrigerator is t2C and the room temperature is t1C. The amount of heat delivered to the room for each joule [...]
A refrigerator works between 4°C and 30°C. It is required to remove 600 calories of heat every second in order to keep tire temperature of the refrigerated space constant. The power required is (Take 1 cal = 4.2 Joules)
31
Aug
A refrigerator works between 4°C and 30°C. It is required to remove 600 calories of heat every second in order to keep tire temperature of the refrigerated space constant. The power required is (Take 1 cal = 4.2 Joules) A thermodynamic system is taken through the cycle ABCD as shown in the figure. Heat rejected [...]