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Worksheetskhai revision Chap 7,9, 10 SP015
Total questions: 22
Worksheet time: 11mins
Which of the following is the example of simple harmonic motion?
Car shock absorber system
Bouncing ball on the floor with decreasing height
B. Mass attached on a spring moving back and forth horizontally on a surface with the presence of friction
Marble that is free to roll inside a frictionless hemispherical bowl
K=21mω2(A2−y2) The variation of kinetic energy against the displacement is described by the above equation. Which of the following statement is TRUE?
The kinetic energy is always positive.
Kinetic energy of the SHM is increased linearly with displacement.
Kinetic energy is maximum when the object is at maximum displacement.
Kinetic energy is constant throughout the motion.
Which of the following waves can be transmitted through solids, liquids and gases?
Transverse waves
Electromagnetic waves
Mechanical waves
Longitudinal waves
What is the most fundamental property of wave?
Temperature
Pressure
Frequency
Wavelength
The apparent frequency in Doppler’s effect does not depend upon
Speed of the observer.
Distance between the observer and source.
Speed of the source.
Frequency of the source.
What type of waves are Sound Waves?
Latitudinal waves
Logitudinal waves
Latitudinal mechanical waves
Longitudinal waves
Which of the following statement is or are correct about longitudinal mechanical waves?
The longitudinal mechanical waves which lie in the frequency range 20 Hz to 20000 Hz are called audible or sound waves.
The longitudinal mechanical waves having frequencies less than 20 Hz are called infrasonic.
The longitudinal mechanical waves having frequencies greater than 20,000 Hz are called ultrasonic waves.
All of the above are correct.
A force F stretching a wire produces an extension x. The energy stored in the stretched wire is (1/2)Fx only if
the proportionality limit is exceeded.
the extension is directly proportional to the force.
the cross-sectional area of the wire remains unchanged.
the weight of the wire is negligible.
Particle executing S.H.M the variation of the acceleration of the particles as a function of the displacement of the particle from equilibrium position follow
straight line
curve
ellipses
hyperbola
A particle oscillate between point and , where O is the equilibrium position. Which of the following shows the variation of potential energy of a S.H.M with the displacement from equilibrium?
A sound wave is different than a light wave in that a sound wave is
produced by an oscillating object and a light wave is not.
not capable of traveling through a vacuum.
not capable of diffracting and a light wave is.
capable of existing with a variety of frequencies and a light wave has a single frequency.
A transverse wave is transporting energy from east to west. The particles of the medium will move
east to west only
both eastward and westward
north to south only
both northward and southward
A wave is transporting energy from left to right. The particles of the medium are moving back and forth in a leftward and rightward direction. This type of wave is known as
mechanical
transverse
electromagnetic
longitudinal
A sound wave is a mechanical wave, not an electromagnetic wave. This means that
particles of the medium move perpendicular to the direction of energy transport.
a sound waves transports its energy through a vacuum.
particles of the medium regularly and repeatedly oscillate about their rest position.
a medium is required in order for sound waves to transport energy.
Which of the following is NOT a characteristic of mechanical waves?
They consist of disturbances or oscillations of a medium.
They transport energy.
They travel in a direction that is at right angles to the direction of the particles of the medium.
They are created by a vibrating source.
In Doppler effect change in frequency depends on
distance between source and listener
speeds of source and listener
density of air
half of distance between source and listener
The period of geostationary artificial satellite of earth is
6 hours
12 hours
24 hours
365 days
If the radius of the earth were to shrink by one percent, its mass remaining the same, the acceleration due to gravity on the earth’s surface would
decrease
remains unchanged
increase
none of these
Angular displacement is defined by units
revolution
radian
radian per second
both A and B
Rate at which angular velocity changes with time is called
angular displacement
angular velocity
angular acceleration
angular speed
The acceleration due to gravity is zero at
sea level.
the equator.
poles.
the centre of the earth.
A feather and a coin released simultaneously from the same height do not reach the ground at the same time because of the
resistance of the air.
force of gravitation.
force of gravity.
difference in mass.
