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[" (c) "2s" .(d) "15],[" A bullet of mas...

[" (c) "2s" .(d) "15],[" A bullet of mass "20g" and moving with "600m/s],[" collides with a block of mass "4kg" hanging with "],[" the string of longh "0.4m" .What is velockty of "],[" to height "0.2m" after collision? "],[" (4) "200mls" (b) "150mls],[" (c) "400mls" (d) "300mls],[" Three identical blocks "A,B" and "C" are placed "]

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