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प्रश्न
When a particle moves in a circle with a uniform speed
विकल्प
its velocity and acceleration are both constant
its velocity is constant but the acceleration changes
its acceleration is constant but the velocity changes
its velocity and acceleration both change.
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उत्तर
its velocity and acceleration both change.
In a circular motion, the direction of particle changes. Therefore, velocity, being a vector quantity, also changes.
As the velocity changes, acceleration also changes.
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