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JEE Main 2012 Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main 2012

A diatomic molecule is made of two masses and which are separated by a distance r. If we calculate its rotational energy by applying Bohr's rule of angular momentum quantization, its energy will be given by ( n is an integer)

Answer: (4)

Solution

About the centre of mass, with . With : $E =

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Question ID VK-103740