1
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
At what temperature is the $$r.m.s$$ velocity of a hydrogen molecule equal to that of an oxygen molecule at $${47^ \circ }C?$$
A
$$80K$$
B
$$-73$$ $$K$$
C
$$3$$ $$K$$
D
$$20$$ $$K$$
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Two spheres of the same material have radii $$1$$ $$m$$ and $$4$$ $$m$$ and temperatures $$4000$$ $$K$$ and $$2000$$ $$K$$ respectively. The ratio of the energy radiated per second by the first sphere to that by the second is
A
$$1:1$$
B
$$16:1$$
C
$$4:1$$
D
$$1:9$$
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
1 mole of a gas with $$\gamma = 7/5$$ is mixed with $$1$$ mole of a gas with $$\gamma = 5/3,$$ then the value of $$\gamma $$ for the resulting mixture is
A
$$7/5$$
B
$$2/5$$
C
$$3/2$$
D
$$12/7$$
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