1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The figure shows a system of two concentric spheres of radii $${r_1}$$ and $${r_2}$$ are kept at temperatures $${T_1}$$ and $${T_2}$$, respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to AIEEE 2005 Physics - Heat and Thermodynamics Question 405 English
A
$$In\left( {{{{r_2}} \over {{r_1}}}} \right)$$
B
$${{\left( {{r_2} - {r_1}} \right)} \over {\left( {{r_1}{r_2}} \right)}}$$
C
$${\left( {{r_2} - {r_1}} \right)}$$
D
$${{{r_1}{r_2}} \over {\left( {{r_2} - {r_1}} \right)}}$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is AIEEE 2005 Physics - Heat and Thermodynamics Question 403 English
A
$${1 \over 4}$$
B
$${1 \over 2}$$
C
$${2 \over 3}$$
D
$${1 \over 3}$$
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The function $${\sin ^2}\left( {\omega t} \right)$$ represents
A
a periodic, but not $$SHM$$ with a period $${\pi \over \omega }$$
B
a periodic, but not $$SHM$$ with a period $${{2\pi } \over \omega }$$
C
a $$SHM$$ with a period $${\pi \over \omega }$$
D
a $$SHM$$ with a period $${{2\pi } \over \omega }$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The bob of a simple pendulum is a spherical hollow ball filled with water. A plugged hole near the bottom of the oscillating bob gets suddenly unplugged. During observation, till water is coming out, the time period of oscillation would
A
first decrease and then increase to the original value
B
first increase and then decrease to the original value
C
increase towards a saturation value
D
remain unchanged
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