Question

what is normal reaction defination​

Answer 1

$\huge\tt\red{Answer:-}$

Normal Reaction :- The force exerted by a surface on an object in contact with it which prevents the object from passing through the surface; the force is perpendicular to the surface, and is the only force that the surface exerts on the object in the absence of frictional forces.

Answer 2

Answer:

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Explanation:

The normal reaction is the force exerted by an object to counteract the weight/force exerted by another object in contact with it. Therefore it's magnitude will be same as that of the force exerted and it will be perpendicular to the surface of contact of the two bodies.