ICS Part 1 Physics English Medium Chapter 7 Online Short Questions Test with Answers

Online Short Questions For Chapter 7 "ICS Part 1 Physics Chapter 7 Short Questions Test "

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Physics - ICS Part 1 Physics Chapter 7 Short Questions Test

Question # 1

What are damped oscillations?

Ans 1: The oscillations in which the amplitude decreases steadily with time are called damped oscillations.
Fro example
- The shock absorber of a car
- Motion of any microscopic system

Question # 2

Define (a) resonance (b) damping

Ans 1: Resonance: When the frequency of the applied force is equal to the natural frequency of simple harmonic oscillator, the periodic amplitude of the motion may become extraordinary large. This phenomenon is called resonance.
Damping: The oscillations in which the amplitude decreases steadily with time are called damped oscillations and this phenomenon is called damping

Question # 3

Write one advantage and one disadvantage of resonance.

Ans 1: Advantage: A swing is a good example of mechanical resonance. If a series of regular pushes are given to the swing , its motion can be built up enormously .
Disadvantages: The rhythmic march of column of soldiers on a bridge of long span might set up oscillations of dangerously large amplitude in the bridge structure. Bridge can be collapsed due to violent resonance oscillations. They are advised break their steps.

Question # 4

What is sharpness of resonance?

Ans 1: The amplitude s well as its sharpness< both depend upon the damping. Smaller the damping, greater will be the amplitude and more sharp will be the resonance.

Question # 5

The amplitude of simple pendulum should be small, Why?

Ans 1: If amplitude of simple pendulum is large then force of air friction changes its time period, Therefore amplitude should be kept small.

Question # 6

Why the enthalpy of neutralization has the same value for any strong acid with any strong base?

Ans 1:

Question # 7

How cooking of food is possible in micro-wave oven?

Ans 1: Food can be easily cooked in a microwave oven. The waves produced in this type of oven have a frequency of 2450 MHz. At this frequency the waves are absorbed due to resonance by water and fat molecules in the food.

Question # 8

Explain free and forced oscillations.

Ans 1: Free oscillations; A body is said to be executing free vibrations when it oscillates without the interference of an external force.

Forced oscillations: If an oscillating system is subjected to an external periodic force, then forced vibrations will take place.
- The vibrations of a factory floor caused by the running of heavy machinery is an example of forced vibrations.
- The mass of a vibrating pendulum is struck repeatedly, the forced vibration are produced.

Question # 9

Describe some common phenomena in which resonance plays an important role.

Ans 1:
- A swing is a good example of mechanical resonance.
- Tuning of the radio is the best example of electrical resonance.
- Another good example of resonance is the heating and cooking of food very efficiently and evenly by microwave oven.

Question # 10

Described some common phenomena in which resonance plays an important role.

Ans 1: Tuning of a radio: It is a good example of electrical resonance. For tuning we turn the knob of a radio which changes the natural frequency of electrical circuit of receiver until it becomes equal to the frequency of the transmitter. So resonance is produced and energy absorption is maximum. Hence a station is tuned and we can hear the transmission of desired station .
Microwave oven: The waves produced in this type of oven have a wavelength of 12cm at a frequency of 2450 Mhz at this frequency the waves are absorbed due to resonance by water and fat molecules in the food resulting in efficient and evenly heating and cooking of food.

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Prepare Complete Set Wise Questions For Chapter 7 "ICS Part 1 Physics Chapter 7 Short Questions Test "

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ICS Part 1 Physics Chapter 7 Short Questions Test - Set 1

Question # 1

What are damped oscillations?

Ans 1: The oscillations in which the amplitude decreases steadily with time are called damped oscillations.
Fro example
- The shock absorber of a car
- Motion of any microscopic system

Question # 2

Define (a) resonance (b) damping

Ans 1: Resonance: When the frequency of the applied force is equal to the natural frequency of simple harmonic oscillator, the periodic amplitude of the motion may become extraordinary large. This phenomenon is called resonance.
Damping: The oscillations in which the amplitude decreases steadily with time are called damped oscillations and this phenomenon is called damping

Question # 3

Write one advantage and one disadvantage of resonance.

Ans 1: Advantage: A swing is a good example of mechanical resonance. If a series of regular pushes are given to the swing , its motion can be built up enormously .
Disadvantages: The rhythmic march of column of soldiers on a bridge of long span might set up oscillations of dangerously large amplitude in the bridge structure. Bridge can be collapsed due to violent resonance oscillations. They are advised break their steps.

Question # 4

What is sharpness of resonance?

Ans 1: The amplitude s well as its sharpness< both depend upon the damping. Smaller the damping, greater will be the amplitude and more sharp will be the resonance.

Question # 5

The amplitude of simple pendulum should be small, Why?

Ans 1: If amplitude of simple pendulum is large then force of air friction changes its time period, Therefore amplitude should be kept small.

Question # 6

Why the enthalpy of neutralization has the same value for any strong acid with any strong base?

Ans 1:

Question # 7

How cooking of food is possible in micro-wave oven?

Ans 1: Food can be easily cooked in a microwave oven. The waves produced in this type of oven have a frequency of 2450 MHz. At this frequency the waves are absorbed due to resonance by water and fat molecules in the food.

Question # 8

Explain free and forced oscillations.

Ans 1: Free oscillations; A body is said to be executing free vibrations when it oscillates without the interference of an external force.

Forced oscillations: If an oscillating system is subjected to an external periodic force, then forced vibrations will take place.
- The vibrations of a factory floor caused by the running of heavy machinery is an example of forced vibrations.
- The mass of a vibrating pendulum is struck repeatedly, the forced vibration are produced.

Question # 9

Describe some common phenomena in which resonance plays an important role.

Ans 1:
- A swing is a good example of mechanical resonance.
- Tuning of the radio is the best example of electrical resonance.
- Another good example of resonance is the heating and cooking of food very efficiently and evenly by microwave oven.

Question # 10

Described some common phenomena in which resonance plays an important role.

Ans 1: Tuning of a radio: It is a good example of electrical resonance. For tuning we turn the knob of a radio which changes the natural frequency of electrical circuit of receiver until it becomes equal to the frequency of the transmitter. So resonance is produced and energy absorption is maximum. Hence a station is tuned and we can hear the transmission of desired station .
Microwave oven: The waves produced in this type of oven have a wavelength of 12cm at a frequency of 2450 Mhz at this frequency the waves are absorbed due to resonance by water and fat molecules in the food resulting in efficient and evenly heating and cooking of food.

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ICS Part 1 Physics Chapter 7 Short Questions Test - Set 2

Question # 1

If a heavy and light masses of same size are set into vibration, which of them will stop first?

Ans 1: Light mass will stop first.
The damping effect for the light mass due to air resistance is much greater than the heavy mass. Therefore, it will stop first.

Question # 2

Define resonance.Write its one example.

Ans 1: When the frequency of the applied force is equal to the natural frequency of simple harmonic oscillator, the periodic amplitude of the motion may become extraordinary large. This phenomenon is called resonance.
1. A swing is a good example of mechanical resonance.
2. Turning a radio is the example of electrical resonance.

Question # 3

Write one advantage and one disadvantage of resonance.

Ans 1: Advantage: A swing is a good example of mechanical resonance. If a series of regular pushes are given to the swing , its motion can be built up enormously .
Disadvantages: The rhythmic march of column of soldiers on a bridge of long span might set up oscillations of dangerously large amplitude in the bridge structure. Bridge can be collapsed due to violent resonance oscillations. They are advised break their steps.

Question # 4

The amplitude of simple pendulum should be small, Why?

Ans 1: If amplitude of simple pendulum is large then force of air friction changes its time period, Therefore amplitude should be kept small.

Question # 5

How cooking of food is possible in micro-wave oven?

Ans 1: Food can be easily cooked in a microwave oven. The waves produced in this type of oven have a frequency of 2450 MHz. At this frequency the waves are absorbed due to resonance by water and fat molecules in the food.

Question # 6

Why the enthalpy of neutralization has the same value for any strong acid with any strong base?

Ans 1:

Question # 7

What are damped oscillations?

Ans 1: The oscillations in which the amplitude decreases steadily with time are called damped oscillations.
Fro example
- The shock absorber of a car
- Motion of any microscopic system

Question # 8

Define driven harmonic oscillator and damped oscillations.

Ans 1: Damped Oscillations: TheOscillations in which the amplitude decreases steadily with time are called damped oscillations.

Driven harmonic oscillator: The physical system undergoing forced vibrations is known as driven harmonic oscillator.

Question # 9

Why soldiers are advised to break their steps when marching on a bridge?

Ans 1: The column of soldiers, while marching on a bridge of long span is advised to break their steps. Because their rhythmic march might set up oscillation of dangerously large amplitude in the bridge structure.

Question # 10

What is the total distance travelled by an object moving with SHM in a time equal to its period, if its amplitude is A?

Ans 1: The total distance travelled by an object moving with SHM in its time period is 4A, where A is amplitude of vibration.

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ICS Part 1 Physics Chapter 7 Short Questions Test - Set 3

Question # 1

What is driven harmonic oscillator? Give example.

Ans 1: A Physical system under going forced vibrations is called driven harmonic oscillator.
An example of forced vibration is loud music produced by sounding wooden boards of strings instruments.

Question # 2

What do you understand by forced vibration? Explain with examples.

Ans 1: If an oscillation system is subjected to an external periodic force, then force vibrations will take place.
1. The vibrations of a factory floor caused by the running of heavy machinery is a example of forced vibrations.
2. The mass of a vibrating pendulum is struck repeatedly, the forced vibrations are produced .

Question # 3

What is the total distance travelled by an object moving with SHM in a time equal to its period, if its amplitude is A?

Ans 1: The total distance travelled by an object moving with SHM in its time period is 4A, where A is amplitude of vibration.

Question # 4

Define resonance.Write its one example.

Ans 1: When the frequency of the applied force is equal to the natural frequency of simple harmonic oscillator, the periodic amplitude of the motion may become extraordinary large. This phenomenon is called resonance.
1. A swing is a good example of mechanical resonance.
2. Turning a radio is the example of electrical resonance.

Question # 5

What is sharpness of resonance?

Ans 1: The amplitude s well as its sharpness< both depend upon the damping. Smaller the damping, greater will be the amplitude and more sharp will be the resonance.

Question # 6

Why the amplitude of lead bob is greater than pith ball as the bobs having equal size and length set into vibration?

Ans 1: It is because the mass of lead bob is much greater than the very light pith ball, so lead bob can travel to greater extent in air against the resistive and retarding forces. Lead bob has greater inertia.

Question # 7

How the phenomenon of resonance is produced?

Ans 1: When the frequency of the applied force is equal to the natural frequency of simple harmonic oscillator, the periodic amplitude of the motion may become extraordinary large. This phenomenon is called resonance.
1. A swing is a good example of mechanical resonance.
2. Tuning a radio is the example of electrical resonance.

Question # 8

What is driven harmonic oscillator?

Ans 1: The physical system undergoing forced vibrations is known as driven harmonic oscillator.

Question # 9

The amplitude of simple pendulum should be small, Why?

Ans 1: If amplitude of simple pendulum is large then force of air friction changes its time period, Therefore amplitude should be kept small.

Question # 10

Describe some common phenomena in which resonance plays an important role.

Ans 1:
- A swing is a good example of mechanical resonance.
- Tuning of the radio is the best example of electrical resonance.
- Another good example of resonance is the heating and cooking of food very efficiently and evenly by microwave oven.

Submit

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ICS Part 1 Physics Short Questions Test

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ICS Part 1 Physics English Medium Chapter 7 Online Short Questions Test with Answers

Online Short Questions For Chapter 7 "ICS Part 1 Physics Chapter 7 Short Questions Test "

Physics - ICS Part 1 Physics Chapter 7 Short Questions Test

What are damped oscillations?

Define (a) resonance (b) damping

Write one advantage and one disadvantage of resonance.

What is sharpness of resonance?

The amplitude of simple pendulum should be small, Why?

Why the enthalpy of neutralization has the same value for any strong acid with any strong base?

How cooking of food is possible in micro-wave oven?

Explain free and forced oscillations.

Describe some common phenomena in which resonance plays an important role.

Described some common phenomena in which resonance plays an important role.

Prepare Complete Set Wise Questions For Chapter 7 "ICS Part 1 Physics Chapter 7 Short Questions Test "

Set 1

Set 2

Set 3

ICS Part 1 Physics Chapter 7 Short Questions Test - Set 1

What are damped oscillations?

Define (a) resonance (b) damping

Write one advantage and one disadvantage of resonance.

What is sharpness of resonance?

The amplitude of simple pendulum should be small, Why?

Why the enthalpy of neutralization has the same value for any strong acid with any strong base?

How cooking of food is possible in micro-wave oven?

Explain free and forced oscillations.

Describe some common phenomena in which resonance plays an important role.

Described some common phenomena in which resonance plays an important role.

ICS Part 1 Physics Chapter 7 Short Questions Test - Set 2

If a heavy and light masses of same size are set into vibration, which of them will stop first?

Define resonance.Write its one example.

Write one advantage and one disadvantage of resonance.

The amplitude of simple pendulum should be small, Why?

How cooking of food is possible in micro-wave oven?

Why the enthalpy of neutralization has the same value for any strong acid with any strong base?

What are damped oscillations?

Define driven harmonic oscillator and damped oscillations.

Why soldiers are advised to break their steps when marching on a bridge?

What is the total distance travelled by an object moving with SHM in a time equal to its period, if its amplitude is A?

ICS Part 1 Physics Chapter 7 Short Questions Test - Set 3

What is driven harmonic oscillator? Give example.

What do you understand by forced vibration? Explain with examples.

What is the total distance travelled by an object moving with SHM in a time equal to its period, if its amplitude is A?

Define resonance.Write its one example.

What is sharpness of resonance?

Why the amplitude of lead bob is greater than pith ball as the bobs having equal size and length set into vibration?

How the phenomenon of resonance is produced?

What is driven harmonic oscillator?

The amplitude of simple pendulum should be small, Why?

Describe some common phenomena in which resonance plays an important role.

ICS Part 1 Physics Short Questions Test

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