Classical Mechanics (CSIR Physical Sciences): Questions 13 - 16 of 55

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Question number: 13

» Classical Mechanics » Periodic Motion » Small Oscillations

Appeared in Year: 2011

MCQ▾

Question

A point particle of mass m carrying an electric charge q is attached to a spring of stiffness constant k . A constant electric field E along the direction of the spring is switched on for a time interval T (whereTmk) . Neglecting radiation loss, the amplitude of oscillation after the field is switched off is: (December)

Choices

Choice (4) Response

a.

qETmk

b.

qEmTk32

c.

qEk

d.

qET2m

Question number: 14

» Classical Mechanics » Dynamical System

Appeared in Year: 2011

MCQ▾

Question

A constant force F is applied to applied to a relativistic particle of rest mass m. If the particle starts from rest at t=0 , its speed after a time t is - (December)

Choices

Choice (4) Response

a.

Ftm

b.

c(IeFtmc)

c.

ctanh(Ftm)

d.

FctF2t2+m2c2

Question number: 15

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

Appeared in Year: 2012

MCQ▾

Question

Two events, separated by a (special) distance 9×109m , are simultaneous in one inertial frame. The time interval between these two events in a frame moving with a constant speed 0.8c (where the speed of light c=3×108ms ) is – (June)

Choices

Choice (4) Response

a.

40 s

b.

60 s

c.

20 s

d.

0 s

Question number: 16

» Classical Mechanics » Periodic Motion » Small Oscillations

Appeared in Year: 2012

MCQ▾

Question

The bob of a simple pendulum, which undergoes small oscillations, is immersed in water. Which of the following figures best represents the phase space diagram for the pendulum? (June)

Choices

Choice (4) Response

a.

 The phase space diagram: Choice A

the Phase Space Diagram: Choice A

In figure a phase space diagram for a pendulum which is immersed in water is shown.

b.

The phase space diagram: Choice B

The Phase Space Diagram: Choice B

In figure a phase space diagram for a pendulum which is immersed in water is shown.

c.

The phase space diagram: Choice C

The Phase Space Diagram: Choice C

In figure a phase space diagram for a pendulum which is immersed in water is shown.

d.

The phase space diagram: Choice D

The Phase Space Diagram: Choice D

In figure a phase space diagram for a pendulum which is immersed in water is shown.

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