1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A system goes from $$A$$ to $$B$$ via two processes $$I$$ and $$II$$ as shown in figure. If $$\Delta {U_1}$$ and $$\Delta {U_2}$$ are the changes in internal energies in the processes $$I$$ and $$II$$ respectively, then AIEEE 2005 Physics - Heat and Thermodynamics Question 404 English
A
relation between $$\Delta {U_1}$$ and $$\Delta {U_2}$$ can not be determined
B
$$\Delta {U_1} = \Delta {U_2}$$
C
$$\Delta {U_2} < \Delta {U_1}$$
D
$$\Delta {U_2} > \Delta {U_1}$$
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
If the temperature of the sun were to increase from $$T$$ to $$2T$$ and its radius from $$R$$ to $$2R$$, then the ratio of the radiant energy received on earth to what it was previously will be
A
$$32$$
B
$$16$$
C
$$4$$
D
$$64$$
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
One mole of ideal monatomic gas $$\left( {\gamma = 5/3} \right)$$ is mixed with one mole of diatomic gas $$\left( {\gamma = 7/5} \right)$$. What is $$\gamma $$ for the mixture? $$\gamma $$ Denotes the ratio of specific heat at constant pressure, to that at constant volume
A
$$35/23$$
B
$$23/15$$
C
$$3/2$$
D
$$4/3$$
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity $$K$$ and $$2K$$ and thickness $$x$$ and $$4x,$$ respectively, are $${T_2}$$ and $${T_1}\left( {{T_2} > {T_1}} \right).$$ The rate of heat transfer through the slab, in a steady state is $$\left( {{{A\left( {{T_2} - {T_1}} \right)K} \over x}} \right)f,$$ with $$f$$ equal to AIEEE 2004 Physics - Heat and Thermodynamics Question 406 English
A
$${2 \over 3}$$
B
$${1 \over 2}$$
C
$$1$$
D
$${1 \over 3}$$
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