All India Engineering / Architecture Entrance Examination (AIEEE)
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AIEEE 2010 Physics
Q.13. A thin semi-circular ring of radius r has a positive charge q distributed uniformly over it. The net field
at the centre O is
Sol:
Electric field intensity due to uniformly charged circular arc subtending angle
at its centre is
Answer : (3)
Q.14. The speed of daughter nuclei is
Sol:
As the energy released 
Answer : (2)
