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Questions  

Trajectories of two projectiles are shown in figure, let T1 and T2 be the periods and u1 and u2 are their speeds of projections, then                                    [UP CPMT 2012]

a
T2 > T1
b
T1 = T2
c
u1 > u2
d
u1 < u2

detailed solution

Correct option is D

H1 > H2u1sin α1>u2 sin α2  Since α1>α2   we conclude u1u2 sin α2 , we can conclude T1>T2

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