The displacement time graph for two particles A and B are straight line inclined at angles of 30° and 60° with the time axis. The ratio of velocities V₁: V₂ is
Slope ( = tan ϴ), displacement time graph shows velocity:
V₁/V₂ = tan ϴ₁ / tan ϴ₂
= tan 30°/ tan 60°
= 1/√3 / √3
= 1/3
= 1:3
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[D] 1:3