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[" A semicircle of radius "R=5m" with di...

[" A semicircle of radius "R=5m" with diameter "AD" is shown in figure.Two particles "1],[" and "2" are at points "A" and "B" on diameter at "t=0" and move along segments "AC" and "BC],[" with constant speeds "u_(1)" and "u_(2)" respectively.Then the value of "(u_(1))/(u_(2))" for both particles to "],[" reach point "C" simultaneously will be "],[qquad (1)/(A)sum_(A=10+8)^(@)bullet D],[[" (A) "(5sqrt(2))/(4)," (B) "sqrt((5)/(4))," (C) "(2sqrt(2))/(5)," (D) "2sqrt(2)]]

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