KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 102 - 104 of 268

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Question number: 102

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2012

MCQ▾

Question

Two blocks (1 and 2) of equal mass m are connected by an ideal string (see figure below) over a frictionless pulley. The blocks are attached to the ground by springs having spring constants k1 and k2 such that k1 > k2.

Two blocks of equal mass attached with pulley

Two Blocks of Equal Mass Attached With Pulley

In figure two blocks (1 and 2) of equal mass m are connected by an ideal string over a frictionless pulley.

Initially, both springs are unstretched. The block 1 is slowly pulled down a distance x and released. Just after the release the possible value of the magnitudes of the acceleration of the blocks a1 and a2 can be –

Choices

Choice (4) Response

a.

Either or

b.

Either or

c.

d.

Question number: 103

» Electrostatics » Equipotential Surfaces

Appeared in Year: 2012

MCQ▾

Question

Consider three concentric metallic spheres A, B and C of radii a, b, c respectively where. A and B are connected whereas C is grounded. The potential of the middle sphere B is raised to V then the charge on the sphere C is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 104

» Work, Energy and Power » Conservation of Mechanical Energy

Appeared in Year: 2013

MCQ▾

Question

A point particle of mass 0.5 kg is moving along the x-axis under a force described by the potential energy V shown below. It is projected towards the right from the origin with a speed v. What is the minimum value of v for which the particle will escape infinitely far away from the origin?

Graph of potential energy verses position on x-axis

Graph of Potential Energy Verses Position on X-Axis

Figure shows a point particle of mass 0.5 kg is moving along the x-axis under a force described by the potential energy V.

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

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