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JEE Questions for Physics Oscillations Quiz 12 - MCQExams.com
JEE
Physics
Oscillations
Quiz 12
A particle is executing S.H.M. about the origin at x = 0. Which of the following graph shows variation in potential energy with displacement?
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A horizontal plank is executing SHM along the vertical direction with angular frequency ù. A coin is placed on top of this plank. If the amplitude of oscillation is increased gradually, for what maximum amplitude will the coin be on the verge of loosing contact with the plank?
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When is plank is at its maximum height
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When the plank is at the midpoint
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Statement – 1
: If a spring having spring constant k is divided into equal parts, then the spring constant of each part will be 2k.
Statement – 2
: When the length of the elastic spring is increased ( stretched ) by x, then the amount of work required to be done is 1/2kx
2
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Statement – 1 is true, statement – 2 is true; statement – 2 is the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is true but statement – 2 is not the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is false
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Statement – 1 is false, statement – 2 is true
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Statement – 1 is true, statement – 2 is true; statement – 2 is the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is true but statement – 2 is not the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is false
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Statement – 1 is false, statement – 2 is true
Statement – 1
: Periodic time of a simple pendulum is independent of the mass of the bob.
Statement – 2
: The restoring force does not depend on the mass of the bob.
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Statement – 1 is true, statement – 2 is true; statement – 2 is the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is true but statement – 2 is not the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is false
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Statement – 1 is false, statement – 2 is true
Statement – 1
: The periodic time of a simple pendulum increases on the surface of moon.
Statement – 2
: Moon is very small as compared to Earth.
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Statement – 1 is true, statement – 2 is true; statement – 2 is the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is true but statement – 2 is not the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is false
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Statement – 1 is false, statement – 2 is true
Statement – 1
: For a particle executing S.H.M. with an amplitude of 0.01 m and frequency 30 hz, the maximum acceleration is 36p
2
m/s
2
.
Statement – 2
: The maximum acceleration for the above particle is ± ù
2
A, where A is amplitude.
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Statement – 1 is true, statement – 2 is true; statement – 2 is the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is true but statement – 2 is not the correct explanation of statement – 1
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Statement – 1 is true, statement – 2 is false
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Statement – 1 is false, statement – 2 is true
As shown in figure, two light springs having force constants k
1
= 1.8 N m
–1
and k
2
= 3.2 N m
–1
and a block having mass m = 200 g are placed on a frictionless horizontal surface. One end of both springs are attached to rigid supports. The distance between the free ends of the spring is 60 cm and the block is moving in this gap with a speed v = 120 cm s
–1
When the block is moving towards spring k
2
, what will be the time taken for the spring to get maximum compressed from point D?
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p s
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(p/s
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(p/s
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(p/s
A block having mass M is placed on a horizontal frictionless surface. This mass is attached to one end of a spring having force constant k. The other end of the spring is attached to a rigid wall. This system consisting of spring and mass M is executing SHM with amplitude A and frequency f. When the block is passing through the mid-point of its path of motion, a body of mass m is placed on top of it, as a result of which its amplitude and frequency changes to A’ and f’.
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