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

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

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 # 3

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 # 4

Describe free vibrations.

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

Question # 5

What is slinky spring ?

Ans 1: A large and loose spring coil is called slinky-spring. It can be used to demonstrate the effect of the motion of the source in generating waves in a medium.

Question # 6

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 # 7

Define Simple Harmonic Oscillator and driven harmonic oscillator.

Ans 1: The oscillator motion taking place under the action of restoring force is known as simple harmonic motion.A body such as simple pendulum , executing SHM is called simple harmonic oscillator
A physical system undergoing forced vibrations is know as driven harmonic oscillator.

Question # 8

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 # 9

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 # 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 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?

What is sharpness of resonance?

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

Describe free vibrations.

What is slinky spring ?

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

Define Simple Harmonic Oscillator and driven harmonic oscillator.

What is driven harmonic oscillator? Give example.

Define resonance.Write its one example.

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?

What is sharpness of resonance?

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

Describe free vibrations.

What is slinky spring ?

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

Define Simple Harmonic Oscillator and driven harmonic oscillator.

What is driven harmonic oscillator? Give example.

Define resonance.Write its one example.

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

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

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

What is driven harmonic oscillator?

How a particular station is tuned in radio?

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

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

How the phenomenon of resonance is produced?

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

The amplitude of simple pendulum should be small, Why?

Define (a) resonance (b) damping

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

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

Can we realize an ideal simple pendulum?

Differentiate between damped oscillation and undamped oscillations.

Write one advantage and one disadvantage of resonance.

What are damped oscillations?

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

The amplitude of simple pendulum should be small, Why?

Define frequency and give its unit.

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

Define resonance.Write its one example.

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

ICS Part 1 Physics Short Questions Test

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