Physics
A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

10
20
40
80

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Physics
X-rays region lies between

Ultraviolet and visible region
Short radio waves and long radio waves
Gamma-rays and ultraviolet region
Visible and infra-red region

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