Velocity V of an electron revolving around the nucleus is _ to the radius r of the orbit.
Correct answer: C. Right angle
- A. Acute angle
- B. Obtuse angle
- C. Right angle
- D. Supplementary angle
Explanation
Correct. The velocity of the electron is tangential, and the radius is radial, making them perpendicular.
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About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
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