Worksheetsبنك أسئلة الفيزياء للصف العاشر
Total questions: 119
Worksheet time: 4hrs 37mins
Write in parentheses the name or scientific term that each of the following statements indicates:
Wave
Simple harmonic motion
Frequency
Periodic motion
Amplitude
The simple harmonic motion is a periodic or oscillatory motion.
At the equilibrium position, the net force acting on a simple pendulum is zero.
If a body oscillates with a frequency of 100 Hz, then its period in seconds is equal to:
A tuning fork produces 1200 vibrations in one minute, what is its frequency in hertz?
The period of a simple pendulum (T) moving in simple harmonic motion is calculated using the formula T = 2π√(L/g).
If the period of a simple pendulum is 1 second, what is the length of the pendulum in meters?
If the mass of the pendulum bob is increased to four times its original mass, the period of the simple pendulum does not change.
To reduce the period of a simple pendulum to half its value, its length must be reduced to a quarter.
A wave with a period of 3 seconds has a frequency in hertz of:
0.03
0.3
3
30
A wave with a period of (3) s has a frequency in hertz equal to:
0.03
0.3
3
30
If a mass is attached to a spring and oscillates according to the relationship y=2sin(8t), where dimensions are measured in (cm) and time in (s), what is its frequency in Hz?
1.273
2
5
8
If a mass is attached to a spring and oscillates according to the relationship y=8sin(5t), where dimensions are measured in (cm) and time in (s), what is the amplitude of the oscillation?
5
8
10
50
A device has a frequency of (100) Hz. What is its period in seconds?
0.01
0.1
1
100
Which graph best represents the relationship between restoring force and displacement for an object undergoing simple harmonic motion?
Option 1
Option 2
Option 3
Option 4
A mass of (3) Kg is attached to a spring with a spring constant of (200) N/m. What is the period of the motion in seconds?
0.5
0.77
1.2
1.54
If a mass of (0.2) Kg is suspended from a vertical spring and oscillates in simple harmonic motion, what happens to the period if it is replaced with a mass of (0.8) Kg?
Decreases to a quarter
Decreases to half
Increases to double
Increases to four times
If a pendulum swings between points (A - C) with a period of (2) s, what is the frequency of the oscillatory motion in Hz?
0.25
10
25
50
Is every simple harmonic motion an oscillatory motion?
True
False
To increase the period of a simple pendulum to double, what should be done to the length of the string?
Increase to four times
Increase to two times
Decrease to half
No change
What happens to the period of a spring when the mass attached is increased to four times its original value while keeping other factors constant?
The period increases to twice
The period remains unchanged
The period decreases
The period increases to three times
What happens to the period of a simple pendulum if placed on another planet with a gravitational acceleration different from that of Earth while keeping other factors constant?
The period increases to three times
The period decreases
The period remains unchanged
The period increases to twice
What happens to the period of a simple pendulum if its string length is reduced to a quarter of its original length while keeping other factors constant?
The period decreases to half
The period remains unchanged
The period increases
The period increases to twice
What happens to the period of a simple pendulum when the mass attached is increased to four times its original value while keeping other factors constant?
It does not change
It increases
It decreases
It remains the same
What happens to the period if a mass of 0.2 Kg attached to a spring is replaced with a mass of 0.8 Kg?
The period increases to twice
The period remains unchanged
The period decreases
The period increases to three times
List the factors affecting the period of a spring.
List the factors affecting the period of a simple pendulum.
List the factors affecting the restoring force.
Solve the following problem: A mass of 0.25 kg is connected to a spring with a spring constant of 25 N/m placed horizontally on a smooth table. If the mass is pulled 8 cm to the right of the equilibrium position and released to move in simple harmonic motion on the smooth surface, calculate the period.
A mass is placed horizontally on a smooth table with a spring constant of (25) N/m. If the mass is pulled (8) cm to the right of the equilibrium position and left to move in simple harmonic motion on the smooth surface. Calculate: a) the period.
Given the relationship y = 10sin(ωt), where dimensions are measured in (cm) and time in (s) and angles in (rad). Calculate: a) the amplitude of the motion.
A simple pendulum makes 150 oscillations in one minute. Calculate: a) the period.
The figure represents a simple pendulum moving in simple harmonic motion. If this pendulum makes (50) oscillations in (40) s, calculate: a) the frequency.
If a mass of (0.03) kg is attached to a spring with a spring constant of (48) N/m, placed on a smooth surface, pulled and left to oscillate. Calculate: a) the period.
Write in parentheses the name or scientific term indicated by each of the following statements: 1. Waves in which the motion of the medium's particles is perpendicular to the direction of wave propagation.
Transverse waves
Longitudinal waves
First law of reflection
Second law of reflection
Sound
A bug emits a sound with a frequency of 120 Hz and a speed of 340 m/s. What is the wavelength of the sound in air in meters?
Sound bends when it travels between two mediums due to a difference in speed in the two mediums.
When the number of vibrations occurring per second (frequency) increases, the distance between the peaks of the waves (wavelength) decreases.
In a standing wave, the distance between the centers of two consecutive antinodes or nodes equals half the wavelength.
The frequency of the fundamental tone of a string is inversely proportional to its length when the tension and mass per unit length are constant.
The frequency of the fundamental tone of a string is directly proportional to the square root of the tension when the length and mass per unit length are constant.
A stretched string produces a fundamental tone with a frequency of 25 Hz. What is the frequency of the second harmonic in Hz?
75 Hz
50 Hz
100 Hz
125 Hz
A string with a length of 200 cm and a mass per unit length of 1×10^-3 kg/m is stretched with a force of 250 N. What is the frequency of the fundamental tone when it vibrates in Hz?
The bending of waves passing through the opening shown in the adjacent figure increases when the width of the opening is smaller than the wavelength of these waves.
The bending of waves passing through the opening shown in the adjacent figure decreases when the width of the opening is larger than the wavelength of these waves.
The longitudinal waves consist of:
Compressions only
Crests and troughs
Crests only
Compressions and rarefactions
The transverse waves consist of:
Crests only
Compressions only
Crests and troughs
Compressions and rarefactions
A sound wave has a wavelength of 2 m and a frequency of 165 Hz. What is its speed in air in m/s?
330
332
334
336
A green light with a wavelength of 4.881×10^-7 m has a frequency in Hz equal to (given that its speed in air is 3×10^8 m/s):
1.6×10^-16
4.881×10^-7
1.458×10^2
6.14×10^14
The best graph that represents the relationship between wavelength and frequency for a source generating waves in a homogeneous elastic medium is:
If the speed of sound in water is 1500 m/s, what is the wavelength of this sound in meters if the frequency is 15×10^4 Hz?
0.01
0.1
1
10
All of the following waves are mechanical waves except one:
Sea water
Sound
Radio waves
Strings
A water wave travels a distance of 3.4 m in a time of 1.8 s. If the period of one vibration is 1.1 s, what is the question?
A water wave travels in a pond a distance of (3.4) m in a time of (1.8) s. If the period of the vibration is (1.1) s, what is the wavelength in meters?
0.28
1.5
1.7
2.077
Which of the following shapes satisfies the law of reflection?
Shape A
Shape B
Shape C
Shape D
What is the angle of reflection in the adjacent figure?
40
60
90
Unknown
Which of the following shapes illustrates the changes occurring to a plane water wave as it passes through a narrow opening in a barrier?
Shape A
Shape B
Shape C
Shape D
If the distance between a node and the next antinode of a standing wave is (0.3)m, what is the wavelength (λ) in meters?
0.6
1.2
1.5
1.6
A string of length (3) m has a standing wave formed with (4) nodes. What is the wavelength (λ) in meters?
1
2
3
6
Two strings of equal length and tension have linear mass densities of (0.54) kg/m and (0.24) kg/m respectively. If the frequency of the first string is (200) Hz, what is the frequency of the second string in Hertz?
100
200
300
400
A string of length (50) cm vibrates under the influence of a tuning fork with a frequency of (100) Hz. What is the speed of wave propagation in the string in (m/s)?
5
10
20
25
When waves occur, the particles of the medium do not move from their place while the energy disturbance travels from one place to another. Is this statement true or false?
True
False
Sound travels in material media and in a vacuum. Is this statement true or false?
True
False
The phenomena of reflection and interference occur in sound waves. Is this statement true or false?
True
False
The principle of superposition is achieved if the two waves are of different types. Is this statement true or false?
True
False
In a standing wave, the distance between two consecutive nodes (one segment length) equals the wavelength. Is this statement true or false?
True
False
The tone produced by the string when it vibrates as a whole and its frequency is the lowest frequency at which the string vibrates is called the fundamental tone. Is this statement true or false?
True
False
The tones produced by the string when it vibrates in the form of two segments are called the second harmonic tone. Is this statement true or false?
True
False
What happens when sound waves fall from cold air to hot air?
They bend away from the column
They bend towards the column
What is the reason for the bending of waves when they move between two media of different densities?
Why do astronauts use wireless devices for communication?
Because sound does not travel in a vacuum
Because sound travels faster in space
Why can we see sunlight but not hear explosions happening in the sun?
Because light is electromagnetic waves
Because sound is mechanical waves
What is the lowest frequency produced by a vibrating string?
Fundamental frequency
Harmonic frequency
Why are standing waves called so?
Because of fixed nodes and antinodes
Because they are stationary
What happens to a sound ray falling close to the column at the boundary between two media of different densities?
It bends towards the column
It bends away from the column
What happens to a sound ray falling away from the column at the boundary between two media of different densities?
It bends towards the column
It bends away from the column
What happens if a bell is placed under a vacuum glass bell jar?
We do not hear the ringing sound
We hear the ringing sound
What phenomenon occurs when sound waves bend in the air surrounding the Earth's surface?
What happens to the frequency of a vibrating string if the tension is increased to four times?
What happens to the frequency of a vibrating string if the mass per unit length is reduced to a quarter?
What happens to the frequency of a sound wave when it travels between two different media?
What happens to the speed of a transverse wave in a string when the tension is increased to four times?
What happens to the speed of a wave in the same medium if the frequency is doubled?
List the factors that affect the speed of wave propagation.
Study the following shapes and answer the following questions: (1) The figure shows the phenomenon of interference in waves.
What is the type of interference when a crest meets a trough?
Destructive
Constructive
What is the phenomenon called when sound passes through a sharp edge or a small opening?
(a)
What are the two types of waves shown in the figure?
Longitudinal
Transverse
What is the property of sound waves that occurs due to refraction?
(a)
Solve the following problem: A sound wave with a frequency of (200) Hz travels across a football field of length (91) m in a time of (0.27) S. If the speed of the wave is (337) m/s, calculate: A) Wavelength B) Period C) Wavelength if the frequency becomes (400) Hz.
The following figure illustrates the phenomenon of refraction in sound waves: A) Draw the refracted ray in the figure. B) The sound ray refracts away from the normal because the speed of the sound ray in the first medium (V1) is less than its speed in the second medium (V2).
The following figure illustrates the displacement and time of a transverse wave. From the diagram, find: A) Amplitude B) Period C) Frequency D) Angular velocity E) Wave speed if the wavelength is (8) m.
A string of length (50) cm produces a fundamental frequency of (500) Hz. Calculate its frequency when its length becomes (100) cm.
A wire of length (140) cm and mass (52) g is subjected to a weight of (16) kg. Calculate: A) Mass per unit length of the string B) Tension in the string C) Fundamental frequency of the string D) Frequency of the second harmonic.
A rope of length (240) cm vibrates with a frequency of (15) Hz. Calculate: A) Wavelength B) Wave speed in the rope.
Study the following figure and answer the following: A) Wavelength B) Period C) Frequency.
Calculate the wavelength. λ = 2L/n = 2×0.5/3 = 0.33 m
Calculate the period. T = 0.10 s
Calculate the frequency. f = 1/T = 1/0.10 = 10 Hz
Calculate the amplitude of the vibration. A = 7.5 cm
Calculate the wave speed. V = λ·f = 0.33×10 = 3.3 m/s
Calculate the wave speed in the string. V = √(T/μ) = √(0.5×10/0.0008/1.5) = 30.6 m/s
Calculate the frequency of the vibration source. f = V/λ = 30.6/0.5 = 61.2 Hz
Calculate the number of waves in the figure.
1
2
3
Calculate the frequency of the vibration. f = 1/T = 1/1 = 1 Hz
Calculate the amplitude of the vibration. 2 cm
Calculate the wave speed. V = λ·f = 0.04×1 = 0.04 m/s
Calculate the wavelength in both cases.
Calculate the mass per unit length. μ = m/L = 0.05/0.5 = 0.1 kg/m
Calculate the fundamental frequency. f0 = n/(2L)√(T/μ) = 1/(2×0.5)√(88.2/0.1) = 29.69 Hz
Calculate the first harmonic frequency. f = n*f0 = 2×29.69 = 59.39 Hz
Calculate the third harmonic frequency. f = n*f0 = 4×29.69 = 118.793 Hz
Calculate the wave speed in the string. V = √(T/μ) = √(88.2/0.1) = 29.69 m/s
What is the principle of conservation of charge?
Principle of charge conservation
Principle of energy conservation
What is Coulomb's law?
Coulomb's law
Newton's law
What is electric discharge?
Electric discharge
Electric charge
When an atom loses one of its electrons, it becomes a positive ion.
When an atom gains one or more electrons, it becomes a negative ion.
Electrons in rubber are more...
