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NEET 2013
Exam
NEET
Year
2013
Subject
Physics
Chapter
Work, Power and Energy

NEET 2013 · Physics · Work, Power and Energy

A particle with total energy E is moving in a potential energy...

A particle with total energy EE is moving in a potential energy region U(x)U(x). Motion of the particle is restricted to the region when:

Options

  1. AU(x)<EU(x) < E
  2. BU(x)=0U(x)=0
  3. CU(x)≤EU(x) \leq E
  4. DU(x)>EU(x)>E

Correct answer

C. U(x)≤EU(x) \leq E

Step-by-step solution

We know thatE=K\cdotE+PEE=K\cdotE.+V(n)⇒E−U(n)=K.E.=12mv2⇒E≥V(n)\begin{aligned}E & =K \cdotE+P E \\ E & =K \cdotE .+V(n) \\ \Rightarrow \quad E-U(n) & =K . E . \\ & =\frac{1}{2}m v² \\ \Rightarrow \quad E & \geq V(n) \end{aligned}
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