Physics
Grade-9
Easy
Question
Choose the correct statements:
Assertion: Sine and cosine functions are periodic functions.
Reason: Sinusoidal functions repeat their values after a definite interval of time.
- Assertion is correct, the reason is correct; the reason is a correct explanation for assertion
- Assertion is correct, the reason is correct; the reason is not a correct explanation for assertion
- Assertion is correct, the reason is incorrect
- Assertion is incorrect, the reason is correct
Hint:
A periodic function is one whose value repeats after a definite interval of time.
The correct answer is: Assertion is correct, the reason is correct; the reason is a correct explanation for assertion
Correct option is A)
A periodic function is one whose value repeats after a definite interval of time. sin and cos are periodic functions because they repeat itself after 2 interval of time.
It is also true that moon is smaller than the earth, but this statement is not explaining the assertion.
A periodic function is one whose value repeats after a definite interval of time. sin and cos are periodic functions because they repeat itself after 2 interval of time.
It is also true that moon is smaller than the earth, but this statement is not explaining the assertion.
Related Questions to study
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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.
PhysicsGrade-9
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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:
PhysicsGrade-9
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Force acting in simple harmonic motion is always:
Force acting in simple harmonic motion is always:
PhysicsGrade-9
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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.
PhysicsGrade-9
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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:
PhysicsGrade-9
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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
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Two simple pendulums of length 1 m and 16 m respectively are given small displacements at the same time in the same direction. The number of oscillations ‘N’ of the smaller pendulum for them to be in phase again is:
Two simple pendulums of length 1 m and 16 m respectively are given small displacements at the same time in the same direction. The number of oscillations ‘N’ of the smaller pendulum for them to be in phase again is:
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Select the true statement(s) about SHM.
I. Acceleration display style alpha displacement is a sufficient condition for SHM.
II. Restoring force display style alpha displacement is a sufficient condition for SHM.
Select the true statement(s) about SHM.
I. Acceleration display style alpha displacement is a sufficient condition for SHM.
II. Restoring force display style alpha displacement is a sufficient condition for SHM.
PhysicsGrade-9
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What is constant in S.H.M.?
What is constant in S.H.M.?
PhysicsGrade-9
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In a simple pendulum, the period of oscillation T is related to the length of the pendulum l as:
In a simple pendulum, the period of oscillation T is related to the length of the pendulum l as:
PhysicsGrade-9
