Physics-
General
Easy
Question
In the following indicator diagram, the net amount of work done will be
- Positive
- Negative
- Zero
- Infinity
The correct answer is: Negative
The cyclic process 1 is clockwise where as process 2 is anticlockwise. Clockwise area represents positive work and anticlockwise area represents negative work. Since negative area (2) > positive area (1), hence net work done is negative.
Related Questions to study
Physics-
An ideal gas is taken through the cycle 
, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process 
is
An ideal gas is taken through the cycle , as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process is
Physics-General
Physics-
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done on the system in going from 
is 50 J and 20 cal heat is given to the system. The change in internal energy between A and C is
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done on the system in going from is 50 J and 20 cal heat is given to the system. The change in internal energy between A and C is
Physics-General
Physics-
In pressure-volume diagram given below, the isochoric, isothermal, and isobaric parts respectively, are
In pressure-volume diagram given below, the isochoric, isothermal, and isobaric parts respectively, are
Physics-General
Physics-
Four curves A, B, C and D are drawn in the adjoining figure for a given amount of gas. The curves which represent adiabatic and isothermal changes are
Four curves A, B, C and D are drawn in the adjoining figure for a given amount of gas. The curves which represent adiabatic and isothermal changes are
Physics-General
Physics-
P-V plots for two gases during adiabatic process are shown in the figure. Plots 1 and 2 should correspond respectively to
P-V plots for two gases during adiabatic process are shown in the figure. Plots 1 and 2 should correspond respectively to
Physics-General
Physics-
A thermodynamic process is shown in the figure. The pressures and volumes corresponding to some points in the figure are : 
and 
In process AB, 600 J of heat is added to the system and in process BC, 200 J of heat is added to the system. The change in internal energy of the system in process AC would be
A thermodynamic process is shown in the figure. The pressures and volumes corresponding to some points in the figure are : and
In process AB, 600 J of heat is added to the system and in process BC, 200 J of heat is added to the system. The change in internal energy of the system in process AC would be
Physics-General
Physics-
An ideal gas of mass m in a state A goes to another state B via three different processes as shown in figure. If 
and 
denote the heat absorbed by the gas along the three paths, then
An ideal gas of mass m in a state A goes to another state B via three different processes as shown in figure. If and denote the heat absorbed by the gas along the three paths, then
Physics-General
Physics-
The P-V diagram shows seven curved paths (connected by vertical paths) that can be followed by a gas. Which two of them should be parts of a closed cycle if the net work done by the gas is to be at its maximum
The P-V diagram shows seven curved paths (connected by vertical paths) that can be followed by a gas. Which two of them should be parts of a closed cycle if the net work done by the gas is to be at its maximum
Physics-General
Physics-
V diagram. The work done during a cycle is
V diagram. The work done during a cycle is
Physics-General
Physics-
A system goes from A to B via two processes I and II as shown in figure. If 
and 
are the changes in internal energies in the processes I and II respectively, then
A system goes from A to B via two processes I and II as shown in figure. If and are the changes in internal energies in the processes I and II respectively, then
Physics-General
Physics-
Following figure shows on adiabatic cylindrical container of volume 
divided by an adiabatic smooth piston (area of cross-section = A) in two equal parts. An ideal gas 
is at pressure P1 and temperature T1 in left part and gas at pressure P2 and temperature T2 in right part. The piston is slowly displaced and released at a position where it can stay in equilibrium. The final pressure of the two parts will be (Suppose x = displacement of the piston)
Following figure shows on adiabatic cylindrical container of volume divided by an adiabatic smooth piston (area of cross-section = A) in two equal parts. An ideal gas is at pressure P1 and temperature T1 in left part and gas at pressure P2 and temperature T2 in right part. The piston is slowly displaced and released at a position where it can stay in equilibrium. The final pressure of the two parts will be (Suppose x = displacement of the piston)
Physics-General
Physics-
A cylindrical tube of uniform cross-sectional area A is fitted with two air tight frictionless pistons. The pistons are connected to each other by a metallic wire. Initially the pressure of the gas is P0 and temperature is T0, atmospheric pressure is also P0. Now the temperature of the gas is increased to 2T0, the tension in the wire will be
A cylindrical tube of uniform cross-sectional area A is fitted with two air tight frictionless pistons. The pistons are connected to each other by a metallic wire. Initially the pressure of the gas is P0 and temperature is T0, atmospheric pressure is also P0. Now the temperature of the gas is increased to 2T0, the tension in the wire will be
Physics-General
Chemistry-
Acetic acid undergoes dimerization, when dissolved in benzene
Molecular mass of acetic acid is found 120. Which among the following relation is correct?
Acetic acid undergoes dimerization, when dissolved in benzene Molecular mass of acetic acid is found 120. Which among the following relation is correct?
Chemistry-General
Chemistry-
The dissociation equilibrium of a gas AB2 can be represented as, 
The degree of dissociation is x and is small as compared to 1 The expression relating the degree of dissociation (x) with equilibrium constant Kp and total pressure P is:<
The dissociation equilibrium of a gas AB2 can be represented as, The degree of dissociation is x and is small as compared to 1 The expression relating the degree of dissociation (x) with equilibrium constant Kp and total pressure P is:<
Chemistry-General
Chemistry-
A:
has larger ionic radius than that of 
R: 
is relatively more extensively hydrated as compared with 
A:has larger ionic radius than that of
R: is relatively more extensively hydrated as compared with
Chemistry-General
