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A particle starts from rest with acceler...

A particle starts from rest with acceleration `a = alpha t + beta t^2` where `alpha` and `beta` are constants. Find its displacement between t = 1 and t= 2 second.

A

` 7 alpha/3 + 5 beta/4`

B

` 7 alpha/6 + 5 beta/4`

C

` 7 alpha + 5 beta`

D

``none``

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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