Physics
Grade-9
Easy
Question
A pulse is a wave:
- Of high duration
- Of short duration
- Which travels in a vacuum only
- Which travels in solids only
Hint:
Pulse wave is a short duration of wave
The correct answer is: Of short duration
Pulse wave is due to a sudden non persistent vibration of the source hence it is short duration wave
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What are the two types of mechanical waves?
What are the two types of mechanical waves?
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Sound waves are:
Sound waves are:
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Transverse waves have ________.
Transverse waves have ________.
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Choose the correct statements:
Assertion: Sine and cosine functions are periodic functions.
Reason: Sinusoidal functions repeat their values after a definite interval of time.
Choose the correct statements:
Assertion: Sine and cosine functions are periodic functions.
Reason: Sinusoidal functions repeat their values after a definite interval of time.
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A 20 g particle moves in SHM with a frequency of 3 oscillations per second and an amplitude of 5 cm. The total distance does the particle move during one oscillation is:
A 20 g particle moves in SHM with a frequency of 3 oscillations per second and an amplitude of 5 cm. The total distance does the particle move during one oscillation is:
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If a body is executing simple harmonic motion, then:
If a body is executing simple harmonic motion, then:
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Two simple pendulums of lengths 5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed .... oscillations.
Two simple pendulums of lengths 5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed .... oscillations.
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There are _______ complete oscillations are shown in the graph below.
There are _______ complete oscillations are shown in the graph below.
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Select the correct statement(s) from the following:
I. Motion of a satellite and a planet is periodic as well as SHM.
II. Mass suspended by a spring executes SHM.
III. Motion of a simple pendulum is always SHM.
Select the correct statement(s) from the following:
I. Motion of a satellite and a planet is periodic as well as SHM.
II. Mass suspended by a spring executes SHM.
III. Motion of a simple pendulum is always SHM.
PhysicsGrade-9
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Which of the following statements is not correct for a particle executing simple harmonic motion?
Which of the following statements is not correct for a particle executing simple harmonic motion?
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The periodic time of a body executing simple harmonic motion is 3 sec. After how many intervals from time t = 0, its displacement will be half of its amplitude:
The periodic time of a body executing simple harmonic motion is 3 sec. After how many intervals from time t = 0, its displacement will be half of its amplitude:
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Force acting in simple harmonic motion is always:
Force acting in simple harmonic motion is always:
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Choose the correct statement from the following:
Assertion: In oscillatory motion, displacement of a body from equilibrium can be represented by sine or cosine function.
Reason: The body oscillates to and from about its mean position.
Choose the correct statement from the following:
Assertion: In oscillatory motion, displacement of a body from equilibrium can be represented by sine or cosine function.
Reason: The body oscillates to and from about its mean position.
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The displacement time graph of a particle executing S.H.M. is as shown in the figure:
The corresponding force-time graph will be:
The displacement time graph of a particle executing S.H.M. is as shown in the figure:
The corresponding force-time graph will be:
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Assertion: All small oscillations are simple harmonic.
Reason: Oscillations of a simple pendulum system are always simple harmonic whether the amplitude is small or large.
Assertion: All small oscillations are simple harmonic.
Reason: Oscillations of a simple pendulum system are always simple harmonic whether the amplitude is small or large.
PhysicsGrade-9
