JEE MainPhysicsProperties of MatterMCQ+4 / −1
A bottle has an opening of radius a and length b. A cork of length b and radius (a + a) where ( a < < a) is compressed to fit into the opening completely (See figure). If the bulk modulus of cork is B and frictional coefficient between the bottle and cork is then the force needed to push the cork into the bottle is : 

- A( B b) a
- B(2 B b) a
- C( B b) a
- D(4 B b) a
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