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

Question # 1

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 # 2

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 # 3

Explain relation between total energy, potential energy and kinetic energy for a body in simple harmonic motion.

Ans 1: When the K.E of the mass is maximum, the p.e of the spring is zero. Conversely, when the P.E of the spring is maximum, the K.E of the mass is zero. The interchange occurs continuously from one form to the other but the total energy remains conserved.

Question # 4

What are damped oscillations?Give some of its applications.

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

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

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 # 7

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.

Question # 8

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 # 9

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

Write one advantage and one disadvantage of resonance.

Explain relation between total energy, potential energy and kinetic energy for a body in simple harmonic motion.

What are damped oscillations?Give some of its applications.

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

What are damped oscillations?

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

Define Simple Harmonic Oscillator and driven harmonic oscillator.

Define (a) resonance (b) damping

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

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 do you understand by forced vibration? Explain with examples.

Write one advantage and one disadvantage of resonance.

Explain relation between total energy, potential energy and kinetic energy for a body in simple harmonic motion.

What are damped oscillations?Give some of its applications.

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

What are damped oscillations?

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

Define Simple Harmonic Oscillator and driven harmonic oscillator.

Define (a) resonance (b) damping

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 2

What is driven harmonic oscillator? Give example.

What are damped oscillations?Give some of its applications.

What are damped oscillations?

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

Describe free vibrations.

Explain free and forced oscillations.

Briefly give two phenomena in which resonance plays an important role.

Write one advantage and one disadvantage of resonance.

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

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

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

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

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

Differentiate between damped oscillation and undamped oscillations.

What are damped oscillations?

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?

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

How a particular station is tuned in radio?

What is driven harmonic oscillator?

Explain relation between total energy, potential energy and kinetic energy for a body in simple harmonic motion.

ICS Part 1 Physics Short Questions Test

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