Question

Assertion – Reason based questions Question consists of a statement of an ASSERTION and a REASON . Use the following key to choose appropriate option. (a)Both Assertion and Reasons are true and Assertion is the correct explanation of Reason (b)Both Assertion and Reason are true but Assertion is not the correct explanation of Reason (c) A is true but R is false or vice-versa (d) Both A and R are false • Assertion: In non uniform circular motion, acceleration vector is not perpendicular to the velocity vector. Reason: It has a non-zero tangential component of velocity vector.

Answer 1

Answer:

Assertion and reason are correct and it's the correct explanation

Answer 2

Assertion: In a non-uniform circular motion, the acceleration vector is not perpendicular to the velocity vector. Reason: It has a non-zero tangential component of the velocity vector.

In this assertion and the reason both are true.

• It is assumed that the body responds in a circular motion that is consistent in nature. We know that the body's uniform motion speed does not change as time passes.
• When a body is in a circular motion, its velocity is tangentially outward, and the direction of velocity changes at every moment, therefore we may say that velocity changes with time.
• We may deduce from the idea of uniform motion that the magnitude of the tangential acceleration is zero, leaving us with simply radial acceleration.
• The orientation of radial acceleration has always been more toward the circular path's center, as we know. At every location, radial acceleration is determined by the position, and velocity is tangent towards the circle.
• Therefore, based on the above explanation, we can conclude that the vector of velocity and acceleration are perpendicular to each other.