STANDARDPhysics-Work, Energy and Power
STANDARD Physics Power in Mechanics MCQ Question
Type: MCQ-conceptual-Medium-Class 11
A body is initially at rest. It undergoes one dimensional motion with constant acceleration. The power delivered to it at time t is proportional to
A
t¹/²
B
t
C
t³/²
D
t²
Correct Answer
Option B
Detailed Explanation
Using the equation of motion v = u + at, where u = 0, we have v = at. Power P is given by P = F × v = (ma) × at = ma²t. Since m and a are constants, P ∝ t.
Found an issue with this question?
Related Questions
More from
Which of the following statements about power is correct?
PowerPhysics
Which of the following statements about the scalar product of vectors is correct?
(general)Physics
Assertion (A): The work-energy theorem is an integral form of Newton's second law. | Reason (R): The work-energy theorem involves an integral over an ...
Work-Energy TheoremPhysics