1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
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
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
A Carnot engine, having an efficiency of as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is
A
90 J
B
1 J
C
100 J
D
99 J
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
The approximate depth of an ocean is 2700 m. The compressiblity of water is 45.4 $$ \times $$ 10$$-$$11 Pa$$-$$1 and density of water is 103 kg/m3. What fractional compression of water will be obtained at the bottom of the ocean?
A
1.2 $$ \times $$ 10$$-$$2
B
1.4 $$ \times $$ 10$$-$$2
C
0.8 $$ \times $$ 10$$-$$2
D
1.0 $$ \times $$ 10$$-$$2
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
A particle is executing SHM along a straight line. Its velocities at distances x1 and x2 from the mean position are V1 and V2 respectively. Its time period is
A
$$2\pi \sqrt {{{V_1^2 + V_2^2} \over {x_1^2 + x_2^2}}} $$
B
$$2\pi \sqrt {{{V_1^2 - V_2^2} \over {x_1^2 - x_2^2}}} $$
C
$$2\pi \sqrt {{{x_1^2 + x_2^2} \over {V_1^2 + V_2^2}}} $$
D
$$2\pi \sqrt {{{x_2^2 - x_1^2} \over {V_1^2 - V_2^2}}} $$