1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Kepler's third law states that square of period of revoluation (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e. T2 = Kr3 here K is constant. If the masses of sun and planet are M and m respectively then as per Newton's law of gravitation force of attraction between them is F = $${{GMm} \over {{r^2}}}$$, here G is gravitational constant. The relation between G and K is described as
A
K = G
B
K = $${1 \over G}$$
C
GK = 4$$\pi $$2
D
GMK = 4$$\pi $$2
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Two spherical bodies of mass M and 5M and radii R and 2R are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the smaller body before collision is :
A
7.5R
B
1.5R
C
2.5R
D
4.5R
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
The two ends of a metal rod are maintained at temperatures 100oC and 110oC. The rate of heat flow in the rod is found to be 4.0 J/s. If the ends are maintained at temperatures 200oC and 210oC, the rate of heat flow will be
A
8.0 J/s
B
4.0 J/s
C
44.0 J/s
D
16.8 J/s
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2. Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be $$({\rho _{air}} = 1.2kg/{m^3})$$
A
2.4 $$ \times $$ 105 N, upwards
B
2.4 $$ \times $$ 105 N, downwards
C
4.8 $$ \times $$ 105 N, downwards
D
4.8 $$ \times $$ 105 N, upwards
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