JEE Advanced 2017 Paper 1 Offline | Heat and Thermodynamics Question 28 | Physics

1

JEE Advanced 2017 Paper 1 Offline

MCQ (Single Correct Answer)

+3

-0.75

An ideal gas is undergoing a cyclic thermodynamic process in different ways as shown in the corresponding $$P-V$$ diagram in column 3 of the table. Consider only the path from state $$1$$ to state $$2.$$ $$W$$ denotes the corresponding work done on the system. The equations and plots in the table have standard notations as used in thermodynamic processes. Here $$Y$$ is the ratio of heat capacities at constant pressure and constant volume. The number of moles in the gas is $$n.$$

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 45 English Comprehension 1

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 45 English Comprehension 1

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 45 English Comprehension 2

Which of the following options is the only correct representation of a process in which

$$\Delta U = \Delta Q - P\Delta V$$?

A

$$\left( {{\rm I}{\rm I}} \right)\left( {iv} \right)\left( R \right)$$

B

$$\left( {{\rm I}{\rm I}{\rm I}} \right)\left( {iii} \right)\left( P \right)$$

C

$$\left( {{\rm I}{\rm I}} \right)\left( {iii} \right)\left( S \right)$$

D

$$\left( {{\rm I}{\rm I}} \right)\left( {iii} \right)\left( P \right)$$

2

JEE Advanced 2017 Paper 1 Offline

MCQ (Single Correct Answer)

+3

-0.75

An ideal gas is undergoing a cyclic thermodynamic process in different ways as shown in the corresponding $$P-V$$ diagram in column 3 of the table. Consider only the path from state $$1$$ to state $$2.$$ $$W$$ denotes the corresponding work done on the system. The equations and plots in the table have standard notations as used in thermodynamic processes. Here $$Y$$ is the ratio of heat capacities at constant pressure and constant volume. The number of moles in the gas is $$n.$$

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 44 English Comprehension 1

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 44 English Comprehension 1

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 44 English Comprehension 2

Which one of the following options is the correct combination?

A

$$\left( {{\rm I}V} \right)\left( {ii} \right)\left( S \right)$$

B

$$\left( {{\rm I}{\rm I}{\rm I}} \right)\left( {ii} \right)\left( S \right)$$

C

$$\left( {{\rm I}{\rm I}} \right)\left( {iv} \right)\left( P \right)$$

D

$$\left( {{\rm I}{\rm I}} \right)\left( {iv} \right)\left( R \right)$$

3

JEE Advanced 2017 Paper 1 Offline

MCQ (Single Correct Answer)

+3

-0.75

An ideal gas is undergoing a cyclic thermodynamic process in different ways as shown in the corresponding $$P-V$$ diagram in column 3 of the table. Consider only the path from state $$1$$ to state $$2.$$ $$W$$ denotes the corresponding work done on the system. The equations and plots in the table have standard notations as used in thermodynamic processes. Here $$Y$$ is the ratio of heat capacities at constant pressure and constant volume. The number of moles in the gas is $$n.$$

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 43 English Comprehension 1

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 43 English Comprehension 1

JEE Advanced 2017 Paper 1 Offline Physics - Heat and Thermodynamics Question 43 English Comprehension 2

Which one of the following options correctly represents a thermodynamic process that is used as a correction in the determination of the speed of sound in an ideal gas?

A

$$\left( {\rm I} \right)\left( {ii} \right)\left( Q \right)$$

B

$$\left( {{\rm I}V} \right)\left( {ii} \right)\left( R \right)$$

C

$$\left( {{\rm I}{\rm I}{\rm I}} \right)\left( {iv} \right)\left( R \right)$$

D

$$\left( {\rm I} \right)\left( {iv} \right)\left( Q \right)$$

4

JEE Advanced 2016 Paper 2 Offline

MCQ (Single Correct Answer)

+3

-1

The ends Q and R of two thin wires, PQ and RS, are soldered (joined) together. Initially each of the wires has a length of 1 m at 10^oC. Now the end P is maintained at 10^oC, while the end S is heated and maintained at 400^oC. The system is thermally insulated from its surroundings. If the thermal conductivity of wire PQ is twice that of the wire RS and the coefficient of linear thermal expansion of PQ is 1.2 $$ \times $$ 10^-5 K^-1 , the change in length of the wire PQ is

A

0.78 mm

B

0.90 mm

C

1.56 mm

D

2.34 mm