1
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.
2
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.
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at distances of 2 m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is
A
3 : 2
B
2 : 3
C
9 : 4
D
4 : 9
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
As per the diagram a point charge +q is placed at the origin O. Work done in taking another point charge $$-$$Q from the point A [coordinates (0, $$a$$)] to another point B

AIPMT 2005 Physics - Electrostatics Question 40 English
A
zero
B
$$\left( {{{qQ} \over {4\pi {\varepsilon _0}}}{1 \over {{a^2}}}} \right).\sqrt 2 a$$
C
$$\left( {{{ - qQ} \over {4\pi {\varepsilon _0}}}{1 \over {{a^2}}}} \right).\sqrt 2 a$$
D
$$\left( {{{qQ} \over {4\pi {\varepsilon _0}}}{1 \over {{a^2}}}} \right).{a \over {\sqrt 2 }}$$