A thin disc of mass 
and radius 
has mass per unit area 
where 
is the distance from its centre. Its moment of inertia about an axis going through its centre of mass and perpendicular to its plane is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
JEE Main 2019
As from the question density 
Mass of disc 
Moment of inertia about the axis of the disc.
[putting value of k from eqn 
]
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