# Classical Mechanics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 13 - 16 of 69

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## Question number: 13

» Classical Mechanics » Periodic Motion » Small Oscillations

Appeared in Year: 2011

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

b.

c.

d.

## 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 , its speed after a time is - (December)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 15

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

Appeared in Year: 2012

MCQ▾

### Question

Two events, separated by a (special) distance, are simultaneous in one inertial frame. The time interval between these two events in a frame moving with a constant speed (where the speed of light) 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.

b.

c.

d.

f Page