KVPY Stream-SA (Class 11) Physics: Questions 69 - 71 of 252

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Question number: 69

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 2013

MCQ▾

Question

The figure shows a bar magnet and a metallic coil. Consider four situations. An emf in the coil will be generated for the following situations,

A bar magnet and a metallic coil

A Bar Magnet and a Metallic Coil

Figure shows a bar magnet placed near to a vertically placed metallic coil.

(I) Moving the magnet away from the coil.

(II) Moving the coil towards the magnet.

(III) Rotating the coil about the vertical diameter.

(IV) Rotating the coil about its axis.

Select the correct option,

Choices

Choice (4) Response

a.

(I), (II) and (III) are correct

b.

(I) and (II) are correct

c.

(II) and (III) are correct

d.

(III) and (IV) are correct

Question number: 70

» Kinematics » Position-Time Graphs

Appeared in Year: 2013

MCQ▾

Question

The accompanying graph of position x versus time t represents the motion of a particle. If p and q are both positive constants, the expression that best describes the acceleration a of the particle is,

Accompanying graph of position X versus time t

Accompanying Graph of Position X Versus Time T

In figure the accompanying graph of position x versus time t represents the motion of a particle is shown.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 71

» Kinematics » Relative Velocity

Appeared in Year: 2013

MCQ▾

Question

Two stones of mass m1 and m2 (such that m1 > m2) are dropped Δt time apart from the same height towards the ground. At a later time t the difference in their speed is ΔV and their mutual separation is ΔS. While both stones are in flight,

Choices

Choice (4) Response

a.

ΔV and ΔS increase with time

b.

ΔV remains constant with time and ΔS increases with time

c.

ΔV remains constant with time and ΔS decreases with time

d.

ΔV decreases with time and ΔS increases with time

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