Displacement of the body in S.H.M is equal to amplitude when body is at

1. mean position

2.else where

3.extreme position

4.none

**Posted Date**:-2021-08-31 02:45:04

Electrical resonance is observed in

1.radio

2.microwave oven

3.both in radio and microwave oven

4. neither in radio nor in microwave oven

**Posted Date**:-2021-08-31 02:45:04

For a simple pendulum the restoring force is caused by

1.gravity

2.spring

3.hand

4.all of these

**Posted Date**:-2021-08-31 02:45:04

In case of a simple pendulum the cause of damping is

1.drag force of air

2.gravity

3.tension in string

4.none of these

**Posted Date**:-2021-08-31 02:45:04

Natural frequency of simple pendulum depends upon

1.its mass

2.its length

3.square of its length

4.square root of its length

**Posted Date**:-2021-08-31 02:45:04

The projection of the particle moving in a circle with non-uniform speed executes.

1.S.H.M

2.Vibratory motion

3.Both (b) and (d)

4.None S.H.M

**Posted Date**:-2021-08-31 02:45:04

The SI unit of force constant is identical with that of

1.force

2.pressure

3.surface tension

4.loudness

**Posted Date**:-2021-08-31 02:45:04

When the amplitude of a wave become double its energy become

1.double

2.four times

3.one half

4.none time

**Posted Date**:-2021-08-31 02:45:04

A cup of milk is placed in a microwave oven. Tell which statements is false (1) Milk will be heated up only (2) Cup will remain cool (3) Both cup and mild will get hot.

1.both

2.1

3.2

4.3

**Posted Date**:-2021-08-31 02:45:04

Forced vibration are known as

1.simple harmonic vibration

2.natural vibration

3.driven harmonic vibration

4.free vibration

**Posted Date**:-2021-08-31 02:45:04

If length of second pendulum becomes four times then its time period will become

1.four times

2.six times

3.eight times

4.two times

**Posted Date**:-2021-08-31 02:45:04

In vibratory motion

1.P.E. remains constant

2.K.E. remain constant

3.total energy remain constant

4.total momentum remain constant

**Posted Date**:-2021-08-31 02:45:04

The length of second pendulum is

1.100 cm

2.99 cm

3.99.2 cm

4.98 cm

**Posted Date**:-2021-08-31 02:45:04

The product of frequency and time period is equal to

1.1

2.2

3.3

4.4

**Posted Date**:-2021-08-31 02:45:04

Total energy of a body executing S.H.M is directly proportional to

1.square root of amplitude

2.the amplitude

3.reciprocal of amplitude

4.square of amplitude

**Posted Date**:-2021-08-31 02:45:04

A simple pendulum suspended form the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely the time period is

1.infinite

2.T/g

3.zero

4.g/T

**Posted Date**:-2021-08-31 02:45:04

At Murree Hills (Assume value of g changes). If we use a simple pendulum as time standard then one second duration will.

1.increase

2.decrease

3.remains same

4.is zero

**Posted Date**:-2021-08-31 02:45:04

For what displacement the P.E becomes 1/4 of its maximum value?

1.x = x?

2.x = x?/2

3.x = x?/4

4.x = x?2/2

**Posted Date**:-2021-08-31 02:45:04

In damped harmonic oscillation which one decreases?

1.amplitude of vibration

2.energy of vibration

3.both amplitude and energy

4.neither amplitude nor energy

**Posted Date**:-2021-08-31 02:45:04

In S.H.M. the velocity of a particle is maximum at

1.mean position

2.extreme position

3.middle between mean and extreme position on the right side

4.middle between mean and extreme position on the left side

**Posted Date**:-2021-08-31 02:45:04

Mass attached to a spring executes.

1.vibratory motion

2.rotatory motion

3.S.H.M

4. both (a) and c

**Posted Date**:-2021-08-31 02:45:04

Phase of SHM describes

1.displacement only

2.direction of motion only

3.both displacement and direction of motion

4.neither displacement nor direction of motion

**Posted Date**:-2021-08-31 02:45:04

S.I unit of frequency is

1.vibration S-2

2.radian

3.hertz

4.ms-1

**Posted Date**:-2021-08-31 02:45:04

Sharpness of resonance is

1.directly proportional to damping force

2.inversely proportional to damping force

3.equal to square of damping force

4.equal to square of damping force

**Posted Date**:-2021-08-31 02:45:04

The acceleration of a projection on the diameter for a particle moving along a circle is

1.w2x

2.wx2

3.w2x

4.wx2

**Posted Date**:-2021-08-31 02:45:04

The displacement of SHM is written as X = X? sin?t if displacement is written by X = X? son ?t then phase constant will be equal to

1.0?

2.45?

3.90?

4.180?

**Posted Date**:-2021-08-31 02:45:04

The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body

1.10 cm

2.5 cm

3.15 cm

4.7.5 cm

**Posted Date**:-2021-08-31 02:45:04

The energy absorbed by a body is ________________ at resonance.

1.maximum as well minimum

2.minimum only

3.maximum only

4.zero

**Posted Date**:-2021-08-31 02:45:04

The energy of SHM is maximum at

1.mean position

2.extreme position

3.in between mean and extreme

4.all positions during SHM

**Posted Date**:-2021-08-31 02:45:04

The force responsible for the vibratory motion of the simple pendulum is

1. mg cos?

2. mg sin?

3.mg ton?

4.mg

**Posted Date**:-2021-08-31 02:45:04

The frequency of the second pendulum is

1.1 hertz

2.0.5 hertz

3. 1.5 hertz

4.2.5 hertz

**Posted Date**:-2021-08-31 02:45:04

The restoring force acting on simple pendulum is given by

1.mg sin ?

2.mg sin ?

3.mg cos ?

4.mg cos ?

**Posted Date**:-2021-08-31 02:45:04

The time period of a second pendulum is

1. 4 seconds

2.3 seconds

3.2 seconds

4.6 seconds

**Posted Date**:-2021-08-31 02:45:04

The velocity of the mass attached to a spring is maximum at

1.mean position

2.extreme position

3.both (a) and (b)

4.none

**Posted Date**:-2021-08-31 02:45:04

The waveform of S.H.M. is

1.standing wave

2.sine wave

3.square wave

4.none

**Posted Date**:-2021-08-31 02:45:04

Total distance traveled by bob of simple pendulum in one vibration is equal to

1.amplitude

2.square of amplitude

3.2 x amplitude

4.4 x amplitude

**Posted Date**:-2021-08-31 02:45:04

Total distance traveled by bob of simple pendulum in one vibration is equal to

1.amplitude

2.square of amplitude

3.2 x amplitude

4.4 x amplitude

**Posted Date**:-2021-08-31 02:45:04

When K.E energy of SHM is maximum its

1.P.E is zero

2.acceleration is zero

3.restoring force is zero

4.all P.E acceleration and restoring force are zero

**Posted Date**:-2021-08-31 02:45:04

Which one dows not work according to resonance?

1.T.V

2.radio

3.microwave oven

4.bulb

**Posted Date**:-2021-08-31 02:45:04

- ECAT Physics Alternating Current Mcq Questions
- ECAT Physics Current Electricity Mcq Questions
- ECAT Physics Oscillations Mcq Questions
- ECAT Physics Work And Energy Mcqs Questions
- ECAT Physics Circular Motion Mcqs Questions Set-1
- ECAT Physics Measurements Mcqs Questions
- ECAT Physics Circular Motion Mcqs Questions Set 2
- ECAT Physics Electromagnetism MCQs
- ECAT English MCQs Part 1
- ECAT English MCQs Part 2
- ECAT English MCQs Part 3
- ECAT English MCQs Part 4
- ECAT General Knowledge MCQs Part 1
- ECAT General Knowledge MCQs Part 2
- ECAT Computer Science MCQs Part 1
- ECAT Computer Science MCQs Part 2
- ECAT Current Affairs MCQs Part 1
- ECAT Current Affairs MCQs Part 2
- ECAT Current Affairs MCQs Part 3

R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!