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Jee Main Advanced Physics Chapter Wise Mock Test
Oscillations
Quiz 1
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Q.1
A particle is executing SHM at midpoint of mean position and extreme position . What is it's KE in terms of total energy E.
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E/2
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4E/3
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√ 2 E
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3E/4
Q.2
Total energy of mass spring system in harmonic motion is E=1/2(mω2A2). Consider another system executing SHM with same amplitude having value of spring constant as half the previous one and mass twice as that of previous one. The energy of second oscillator will be
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E
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2E
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$\sqrt 2 E$
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E/2
Q.3
A solid cylinder of radius r and mass m is connected to a spring of spring constant k and it slips on a friction less surface without rolling with angular frequency
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√(k/mr)
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√(kr/m)
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√(k/m)
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√(2k/m)
Q.4
The total energy of the particle executing SHM is Here x is the displacement of the particle
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$ \alpha x^2$
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$ \alpha x$
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$ \alpha x^{1/2}$
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Independent of x
Q.5
In a spring mass system executing SHM having mass m and spring constant K with Time period T. Match the column I to the column II
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p-> iv, q -> i ,r -> iii, s-> ii
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p-> iii, q -> i ,r -> iv, s-> ii
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p-> i, q -> i ,r -> iii, s-> ii
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p-> iii, q -> i ,r -> iii, s-> ii
Q.6
If a simple harmonic motion is represented by $\frac {d^2x}{dt^2} + \beta x=0$, then its time period is
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$\frac {2 \pi}{\sqrt {\beta}}$
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$\frac {2 \pi}{\beta}$
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$2 \pi \beta$
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$2 \pi\sqrt {\beta}$
Q.7
A particle is executing linear SHM of amplitude A. What fraction of total energy is potential when the displacement is 1/4 times amplitude
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3/2
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1/16
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1/4
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1/2√ 2
Q.8
In the system shown below frequency of oscillation when mass is displaced slightly is
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$f=\frac {1}{2\pi} \sqrt { \frac {k_1k_2}{k_1+k_2)m}}$
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$f=\frac {1}{2\pi} \sqrt { \frac {k_1+k_2}{m}}$
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$f=\frac {1}{2\pi} \sqrt { \frac {m}{k_1 k_2}}$
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$f=\frac {1}{2\pi} \sqrt { \frac {k_1+k_2}{mk_1 k_2}}$
Q.9
find the maximum static frictional force on the body M2
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$\mu _s g M_1$
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$\mu _s g M_2$
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$\mu _s g (M_1 + M_2)$
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None of these
Q.10
A solid cylinder of mass m is attached to a horizontal spring with force constant k. The cylinder can roll without slipping along the horizontal plane. Center of mass of the cylinder executes simple harmonic motion if displaced from its mean position,The time period is
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$T= 2 \pi \sqrt { \frac {5m}{k}}$
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$T= 2 \pi \sqrt { \frac {3m}{2k}}$
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$T= 2 \pi \sqrt { \frac {m}{3k}}$
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$T= 2 \pi \sqrt { \frac {m}{k}}$
Q.11
Which one of the following statements is true for the speed v and the acceleration a of a particle executing simple harmonic motion?
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When v is maximum, a is maximum
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Value of a is zero, whatever may be the value of v.
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When v is maximum, a is zero.
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When v is zero, a is zero
Q.12
Find the maximum oscillation magnitude Amax that permits the two bodies to move as unit
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$A_{max}=\frac {(1+a)\mu _s gM_1}{k}$
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$A_{max}=\frac {\mu _s gM_1}{k}$
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$A_{max}=\frac {\mu _s gM_2}{k}$
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none of the above
Q.13
A simple pendulum is displaced from its mean position on to a position A such that height of A above O is 0.05m. It is then released its velocity when it passes mean position is
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.1m/s
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5.0m/s
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1m/s
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1.5m/s
Q.14
The time period of mass suspended from a spring is T. If the spring is cut into four equal parts and the same mass is suspended from one of the parts, then the new time period will be
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T
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2T
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T/2
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T/4
Q.15
A spring of force constant k is cut into two pieces such that one piece is four times the length of the other. the longer piece will have force constant equal to
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4k/5
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5k/4
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3k/2
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4k
Q.16
Fig below shows two spring mass systems. All the springs are identical having spring constant k and are of negligible mass. If m is the mass of block attached to the spring then the ratio of time period of oscillations of both systems is
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1:2√ 2
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2√ 2:1
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1:√ 2
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√ 2:1
Q.17
Fig below shows two equal masses of mass m joined by a rope passing over a light pulley. First mass is attached to a spring and another end of spring is attached to a rigid support. Neglecting frictional forces total energy of the system when spring is extended by a distance x is Here, v = dx/dt , the velocity of mass
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mv2+1/2(Kx2)+mgx
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mv2-1/2(Kx2)+mgx
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mv2-1/2(Kx2)-mgx
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mv2+1/2(Kx2)-mgx
Q.18
A block of mass M1 resting on the frictionless surface is connected to a spring of spring constant k that is anchored in the nearby wall. A block of mass M2=aM1 is placed on the top of the first block. The coefficient of static friction between the two bodies is μs Assuming the two bodies moves as single object, find the period of oscillation of the system
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$T=2 \pi \sqrt {\frac {(1+a)M_1}{k}}$
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$T=2 \pi \sqrt {\frac {M_1}{k}}$
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$T=2 \pi \sqrt {\frac {(1-a)M_1}{k}}$
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$T=2 \pi \sqrt {\frac {aM_1}{k}}$
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