A circular disc of radius b has a hole of radius a at its centre (see figure). If the mass per unit area of the disc varies as , then the radius of gyration of the disc about its axis passing through the centre is :Option 1)Option 2)  Option 3)Option 4)

Option 1)

Option 2)

Option 3)

Option 4)

Preparation Products

Knockout JEE Main April 2021 (One Month)

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 14000/- ₹ 6999/-
Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
Test Series JEE Main April 2021

Take chapter-wise, subject-wise and Complete syllabus mock tests and get in depth analysis of your test..

₹ 6999/- ₹ 4999/-
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-