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A circular disc is to be made by using i...

A circular disc is to be made by using iron and aluminium, so that it acquires maximum moment of inertia about its geometrical axis. It is possible with

A

Iron and aluminium layers in alternate order

B

Aluminium at interior and iron surrounding it

C

Iron at interior and aluminium surrounding it

D

Either (`1`) or (`3`)

Text Solution

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Density of iron `gt` density of aluminium, mass of iron `gt` mass of aluminium
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