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Biology; Chemistry; Physics: Post your doubts here!

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Can someone Please explain how they got the answer D in Q 38? Is fleming's rule applicable here?
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_s09_qp_1.pdf
Yes it's applicable. Just try to keep your finger in the direction of the field and force and you'll see where the current direction is. The current direction is opposite to the ray that is deflected so it means it must be beta particles hence D. Alpha cannot be there because paper would not let it pass.
 
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Link please? :p
Han ek woh wala tha na generator wala shaid. Is position main sab se ziada field lines cut ho rahi hoti hain islye induced emf is the greatest.
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