1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Which of the following rods, (given radius r and length $$l$$) each made of the same material and whose ends are maintained at the same temperature will conduct most heat ?
A
r = r0, $$l$$ = $$l$$0
B
r = 2r0, $$l$$ = $$l$$0
C
r = r0, $$l$$ = 2$$l$$0
D
r = 2r0, $$l$$ = 2$$l$$0
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
An ideal gas heat engine operates in Carnot cycle between 227oC and 127oC. It absorbs 6 $$ \times $$ 104 cal of heat at higher temperature. Amount of heat converted to work is
A
4.8 $$ \times $$ 104 cal
B
6 $$ \times $$ 104 cal
C
2.4 $$ \times $$ 104 cal
D
1.2 $$ \times $$ 104 cal.
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Which of the following processes is reversible?
A
Transfer of heat by conduction
B
Transfer of heat by radiation
C
Isothermal compression
D
Electrical heating of a nichrome wire.
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The circular motion of a particle with constant speed is
A
periodic but not simple harmonic
B
simple harmonic but not periodic
C
period and simple harmonic
D
neither periodic not simple harmonic.
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