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1
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Moon revolves around the earth in an orbit of radius $R$ with time period of revolution $T$. It also rotates about its own axis with a time period $T$. If mass of the moon is $M$ and its radius is $r$, the total kinetic energy of the moon is

A
$\frac{2 M \pi^2 R^2}{T^2}+\frac{4 M r^2 \pi^2}{5 T^2}$
B
$\frac{M \pi^2 R^2}{2 T^2}$
C
$\frac{4 M r^2 \pi^2}{5 T^2}$
D
$\frac{M \pi^2 R^2}{2 T^2}+\frac{4 M r^2 \pi^2}{5 T^2}$
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The spinning of the Diwali cracker 'ground chakkar' involves the concept of

A
conservation of mechanical energy
B
conservation of linear momentum
C
conservation of angular momentum
D
conservation of charge
3
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If the radius of the earth becomes $x$ times its present value, the new period of rotation in hours is
A
$6 x^2$
B
$12 x^2$
C
$24 x^2$
D
$48 x^2$
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