The potential energy U of a system is given by (where x is the position of its particle and A, B are constants). The magnitude of the force acting on the particle is:
1. Constant
2. Proportional to x
3. Proportional to
4. Proportional to
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe potential energy of a particle varies with distance r as shown in the graph. The force acting on the particle is equal to zero at:
1. P
2. S
3. Both Q and R
4. Both P and S
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle is moving such that the potential energy U varies with position in metres as U = ( - 2x + 50) J. The particle will be in equilibrium at:
1. x = 25 cm
2. x = 2.5 cm
3. x = 25 m
4. x = 2.5 m
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe potential energy of a particle in a force field is U= where A and B are positive constants and r is the distance of the particle from the center of the field. For stable equilibrium, the distance of the particle is:
1. B/A
2. B/2A
3. 2A/B
4. A/B
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPotential energy (U) related to coordinates is given by U = 3(x + y). Work done by the conservative force when the particle is going from (0, 0), (2, 3) is:
1. 15 J
2. -15 J
3. 12 J
4. 10 J
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe potential energy of a particle of mass m varies as the magnitude of the The magnitude of the acceleration of the particle at (0, 3) is: (symbols have their usual meaning)
1.
2.
3.
4. Zero
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe figure shows the potential energy function U(x) for a system in which a particle is in a one-dimensional motion. What is the direction of the force when the particle is in region AB? (symbols have their usual meanings)
1. The positive direction of x
2. The negative direction of X
3. Force is zero, so direction not defined
4. The negative direction of y
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe potential energy of a particle of mass 1 kg free to move along the X-axis is given by . The force acting on the particle at x = 0 will be:
1. 2 N
2. -4 N
3. 5 N
4. 4 N
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle of mass 'm' is moving in a horizontal circle of radius 'r' under a centripetal force equal to –K/r2, where K is a constant. The total energy of the particle will be:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe given diagram represents the potential energy curve of a particle in a field. The particle will be in equilibrium at which position(s):
1. B and D
2. A and C
3. A, B, and C
4. A, B, C, and D
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology