Question Answers
Sahay Sir > Question Answers
Two rods of the same material have diameters in the ratio 1:2 and the lengths in the ratio of 2:1. If the temperature difference between their ends is the same, then the ratio of heats conducted by them in a given time will be :
10
Sep
Two rods of the same material have diameters in the ratio 1:2 and the lengths in the ratio of 2:1. If the temperature difference between their ends is the same, then the ratio of heats conducted by them in a given time will be : then the ratio of heats conducted by them in a [...]
The temperature gradient in a rod of 0.5 m long is 80 C/m. If the temperature of hotter end of the rod is 30 C, then the temperature of the cooler end is
10
Sep
The temperature gradient in a rod of 0.5 m long is 80 C/m. If the temperature of hotter end of the rod is 30 C, then the temperature of the cooler end is The temperature gradient in a rod of 0.5 m long is 80 C/m. If the temperature of hotter end of the rod [...]
The change in the entropy of a 1 mole of ideal gas which went through an isothermal process from an initial state (P1,V1,T) to the final state (P2,V2,T) is equal to
10
Sep
The change in the entropy of a 1 mole of ideal gas which went through an isothermal process from an initial state (P1,V1,T) to the final state (P2,V2,T) is equal to 'T' is equal to T) to the final state (P2 The change in the entropy of a 1 mole of ideal gas which went [...]
The two ends of uniform rod of thermal conductivity K are maintained at different but constant temperatures. The temperature gradient at any point on the rod is dl/dθ . The heat flow per unit time per unit cross section of the rod is l.
10
Sep
The two ends of uniform rod of thermal conductivity K are maintained at different but constant temperatures. The temperature gradient at any point on the rod is dl/dθ . The heat flow per unit time per unit cross section of the rod is l. 3. The work done in the process AB is September 10, [...]
In an ideal refrigerator, heat from inside at 277 K is transformed to a room at 300K. How many joules of heat will be delivered to the room for each joule of electrical energy consumed ?
10
Sep
In an ideal refrigerator, heat from inside at 277 K is transformed to a room at 300K. How many joules of heat will be delivered to the room for each joule of electrical energy consumed ? heat from inside at 277 K is transformed to a room at 300K. How many joules of heat will [...]
An ideal refrigerator is used to transfer heat from a freezer at -23 C to the surrounding at 27 C. Its coefficient of performance is
10
Sep
An ideal refrigerator is used to transfer heat from a freezer at -23 C to the surrounding at 27 C. Its coefficient of performance is An ideal refrigerator is used to transfer heat from a freezer at -23 C to the surrounding at 27 C. Its coefficient of performance is September 10, 2021 Category: Cengage [...]
An ideal refrigerator has a freezer at a temperature of -13 C. The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) will be
10
Sep
An ideal refrigerator has a freezer at a temperature of -13 C. The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) will be An ideal refrigerator has a freezer at a temperature of -13 C. The coefficient of performance of the engine is 5. The [...]
An ideal gas is subjected to cyclic process involving four thermodynamic states, the amounts of heat (Q) and work (W) involved in each of these states are The ratio of the net work done by the gas to the total heat absorbed by the gas is η. The values of x and η respectively are
10
Sep
An ideal gas is subjected to cyclic process involving four thermodynamic states, the amounts of heat (Q) and work (W) involved in each of these states are The ratio of the net work done by the gas to the total heat absorbed by the gas is η. The values of x and η respectively are [...]
The maximum possible efficiency of an engine that absorbs hat at 327C and exhausts heat at 127 C is.
10
Sep
The maximum possible efficiency of an engine that absorbs hat at 327C and exhausts heat at 127 C is. The maximum possible efficiency of an engine that absorbs hat at 327C and exhausts heat at 127 C is. September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 21 - Laws of Thermodynamics , [...]
A gas undergoes a process in which its pressure P and volume V are related as VP^(n) = constant. The bulk modulus for the gas in this process is:
10
Sep
A gas undergoes a process in which its pressure P and volume V are related as VP^(n) = constant. The bulk modulus for the gas in this process is: A gas undergoes a process in which its pressure P and volume V are related as VP^(n) = constant. The bulk modulus for the gas in [...]