1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Two spheres of masses m and M are situated in air and the gravitational force between them is F. The space around the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be
A
3 F
B
F
C
F/3
D
F/9
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B. A man jumps to a height of 2 m on the surface of A. What is the height of jump by the same person on the planet B?
A
(2/9) m
B
18 m
C
6 m
D
(2/3) m
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
A body of mass m is placed on earth's surface which is taken from earth surface to a height of h = 3R, then change in gravitational potential energy is
A
$${{mgR} \over 4}$$
B
$${2 \over 3}mgR$$
C
$${3 \over 4}mgR$$
D
$${{mgR} \over 2}$$
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Consider a compound slab consisting of two different materials having equal thicknesses and thermal conductivities K and 2K, respectively. The equivalent thermal conductivity of the slab is
A
$${2 \over 3}K$$
B
$$\sqrt 2 K$$
C
3 K
D
$${4 \over 3}K$$
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