not to test phy but to test if u remember the results..
Q. From a point h above the uniformly charged disc (charge density σ)a charge +q is thrown with some velocity v such that it reach B with same velocity. radius of disc is π/4 and take π2=10.
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2 Answers
1:O
yeh yaad rakhna tha ???
[12]
[17] [17] [17] [17]
nahi hai..... i mean yaad [17]