The figure shows a particle moving along x-axis subjected to three periods of acceleration (a). Rank the periods according to the increase they produce in the particle velocity, greatest first
A
2 > 1 > 3
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B
2 > 3 > 1
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C
1 > 3 > 2
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D
1 > 2 > 3
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Solution
The correct option is D 1 > 2 > 3 Graph of a−t is given.
Area = under a−t graph =|v−u|
Area 1=15(unit)2
Area 2=8(unit)2
Area 3=7(unit)2
⟹A1>A2>A3
⟹ Change in velocity caused will be in order 1>2>3.