Physics
A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds.

4
72
36
8

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Physics
Rainbow is due to

diffusion of sunlight through water droplets
ionisation of water deposits
absorption of sunlight in minute water droplets
refraction and reflection of sunlight by water droplets

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