1
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
$$64$$
2
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
$$4/3$$
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
''Heat cannot by itself flow from a body at lower temperature to a body at higher temperature'' is a statement or consequence of :
A
second law of thermodynamics
B
conservation of momentum
C
conservation of mass
D
first law of thermodynamics
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio $${C_p}/{C_V}$$ for the gas is
A
$${4 \over 3}$$
B
$$2$$
C
$${5 \over 3}$$
D
$${3 \over 2}$$
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