JEE Advanced 2013 Paper 1 Offline | Heat and Thermodynamics Question 48 | Physics

JEE Advanced 2013 Paper 1 Offline

MCQ (Single Correct Answer)

-1

Two rectangular blocks, having identical dimensions, can be arranged in either configuration-I or configuration-II as shown in the figure. One of the blocks has thermal conductivity $$\kappa $$ and the other 2$$\kappa $$. The temperature difference between the ends along the x-axis is the same in both the configurations. It takes 9 s to transport a certain amount of heat from the hot end to the cold end in configuration-I. The time to transport the same amount of heat in configuration-II is

JEE Advanced 2013 Paper 1 Offline Physics - Heat and Thermodynamics Question 23 English

2.0 s

3.0 s

4.5 s

6.0 s

IIT-JEE 2012 Paper 2 Offline

MCQ (Single Correct Answer)

-0.75

Two moles of ideal helium gas are in a rubber balloon at 30^oC. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to 35^oC. The amount of heat required in raising the temperature is nearly (take R = 8.31 J/mol.K)

62 J

104 J

124 J

208 J

IIT-JEE 2012 Paper 1 Offline

MCQ (Single Correct Answer)

-0.75

A mixture of 2 moles of helium gas (atomic mass = 4 amu) and 1 mole of argon gas (atomic mass = 40 amu) is kept at 300 K in a container. The ratio of the rms speeds $$\left( {{{{v_{rms}}\left( {helium} \right)} \over {{v_{rms}}\left( {\arg on} \right)}}} \right)$$ is

0.32

0.45

2.24

3.16

IIT-JEE 2012 Paper 1 Offline

MCQ (Single Correct Answer)

-1

Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductively. The first and third plates are maintained at temperatures 2T and 3T, respectively. The temperature of the middle (i.e. second) plate under steady state condition is

$${\left( {{{65} \over 2}} \right)^{1/4}}T$$

$${\left( {{{97} \over 4}} \right)^{1/4}}T$$

$${\left( {{{97} \over 2}} \right)^{1/4}}T$$

$${(97)^{1/4}}T$$

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