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Oscillations Physics - Oscillations

Tamil Nadu Board - STD 11 - Physics (Tamil - English Medium). 71 questions in this chapter.

Question types

Oscillations question types

71 questions across 3 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.

71
Questions
3
Question groups
5
Question types
Sample Questions

Oscillations questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
A particle executing simple harmonic motion of amplitude 5 cm has maximum speed of 31.4 cm/s. The frequency of its oscillation is …….
  • A
    3 Hz
  • B
    4 Hz
  • C
    2 Hz
  • ✓
     1 Hz

Answer: D.

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Q 2MCQ1 Mark
A simple harmonic oscillator consist of a particle of mass m and an ideal spring with spring constant k The particle oscillates with a time period T. The spring is cut into two equal parts. If one part oscillates with the same particle, the time period will be …….
  • A
    $T / 2$
  • ✓
    $\frac{ T }{\sqrt{2}}$
  • C
    $\sqrt{2} T$
  • D
    $2 T$

Answer: B.

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Q 3MCQ1 Mark
The period of oscillation of a simple pendulum is T in a stationary lift. If the lift moves upwards with an acceleration of 8g, the period will ……..
  • A
    remain the same
  • B
     decrease by T/2
  • ✓
    increase by T/3
  • D
     none of these

Answer: C.

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Q 4MCQ1 Mark
Two simple harmonic motions of angular frequencies 100 and 1000 rad/s have the same displacement amplitude. The ratio of their maximum accelerations is ……….
  • ✓
    $1: 10$
  • B
    $1: 10^2$
  • C
    $1: 10^3$
  • D
    $1: 10^4$

Answer: A.

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Q 5MCQ1 Mark
Which of the following functions represent SHM?
I. $y=\sin \omega t-\cos \omega t$
II. $y=\sin ^3 t$
III. $y=5 \cos \left(\frac{3 \pi}{4}-3 \omega t\right)$
IV. $y=1+\omega t+\omega^2 t^2$
  • ✓
     I and III
  • B
     I and II
  • C
     only I
  • D
     I, II and III

Answer: A.

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Q 6[ 2 Marks Questions ]2 Marks
A body describes simple harmonic motion with an amplitude of 5 cm and a period of 0.2s. Find the acceleration and velocity of the body when the displacement is 5 cm.
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Q 7[ 2 Marks Questions ]2 Marks
A mass M is suspended from a spring of negligible mass. The spring is pulled a little and then released so that the mass executes SHM of time period T. If the mass is increased by m, the time period becomes 5T/3. What is the ratio m/M?
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Q 8[ 2 Marks Questions ]2 Marks
A 0.2 kg of mass hangs at the end of a spring. When 0.02 kg more mass is added to the end of the spring, it stretches 7 cm more. If the 0.02 kg mass is removed, what will be the period of vibration of the system?
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Q 9[ 2 Marks Questions ]2 Marks
A $5 kg$ collar is attached to a spring of force constant $500 Nm ^{-1}$. It slides without friction on a horizontal rod as shown in figure. The collar is displaced from its equilibrium position by $10.0 cm$ and released.
Calculate:
(i) the period of oscillation
(ii) the maximum speed, and
(iii) the maximum acceleration of the collar.
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Q 10[ 2 Marks Questions ]2 Marks
A block whose mass is $1 kg$ is fastened to a spring. The spring has a spring constant of $50 Nm ^{-1}$. The block is pulled to a distance $x=10 cm$ from its equilibrium position at $t=0$ on a frictionless surface from rest at $t=0$. Calculate the kinetic, potential and total energies of the block when it is $5 cm$ away from the mean position.
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