1
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
A round uniform body of radius $$R,$$ mass $$M$$ and moment of inertia $$I$$ rolls down (without slipping) an inclined plane making an angle $$\theta $$ with the horizontal. Then its acceleration is
A
$${{g\,\sin \theta } \over {1 - M{R^2}/I}}$$
B
$${{g\,\sin \theta } \over {1 + I/M{R^2}}}$$
C
$${{g\,\sin \theta } \over {1 + M{R^2}/I}}$$
D
$${{g\,\sin \theta } \over {1 - I/M{R^2}}}$$
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Angular momentum of the particle rotating with a central force is constant due to
A
constant torque
B
constant force
C
constant linear momentum
D
zero torque
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A Carnot engine, having an efficiency of $$\eta = 1/10$$ 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
$$100$$ $$J$$
B
$$99$$ $$J$$
C
$$90$$ $$J$$
D
$$1$$ $$J$$
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
If $${C_p}$$ and $${C_v}$$ denote the specific heats of nitrogen per unit mass at constant pressure and constant volume respectively, then
A
$${C_p} - {C_v} = 28R$$
B
$${C_p} - {C_v} = R/28$$
C
$${C_p} - {C_v} = R/14$$
D
$${C_p} - {C_v} = R$$
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