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21
Pick up the incorrect statement from the following. In a simple harmonic motion
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Answer: Option C
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22
Pick up the incorrect statement from the following. In case of suspension bridge due to rise in temperature,
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Answer: Option C
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23
Impulse can be obtained from a
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Answer: Option B
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24
The angle of friction is:
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Answer: Option C
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25
M.I. of a thin ring (external diameter D, internal diameter d) about an axis perpendicular to the plane of the ring, is
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Answer: Option B
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26
It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to
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Answer: Option D
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27
A funicular polygon cannot be made to pass through
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Answer: Option D
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28
A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is
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Answer: Option C
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29
If the angle of projection is double the angle of inclination ($$\alpha $$) of the plane on which particle is projected, the ratio of times of flight up the inclined plane and down the inclined plane, will be
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Answer: Option A
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30
One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is
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Answer: Option A
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