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Manipal Entrance Test 2015 Physics Paper

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Question : 46

Total: 50

An electron beam accelerated from rest through a potential difference of 5000V in vaccum is allowed to impinge on a surface normally. The incident current is 50µ A and if the electron comes to rest on striking the surface, the force onit is

1.1924×10−8N
2.1×10−8N
1.6×10−8N
1.6×10−6N

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