Oscillations CBSE Questions & Answers

Oscillations

This is Physics Class 11 Oscillations CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The maximum displacement of a particle executing S.H.M is 1 cm and the maximum acceleration is \({\left( {{\rm{1}}.{\rm{57}}} \right)^{\rm{2}}}\) cm/sec, then the time period is
  • A
    1.57\(^{\rm{2}}\) sec
  • B
    1.57 sec
  • C
    4.00 sec
    Correct
  • D
    0.25 sec
2
A body is executing S.H.M When its displacement from the mean position is 4 cm and 5 cm, the corresponding velocities of the body are 10 cm per sec and 8 cm per sec. Then the time period of the body is
  • A
    2 \(\pi \) sec
  • B
    3 \(\pi /2\) sec
  • C
    \(\pi \) sec
    Correct
  • D
    2 \(\pi /2\) sec
3
The ratio of maximum acceleration to maximum velocity of a particle performing S.H.M is equal to
  • A
    Amplitude
  • B
    Square of amplitude
  • C
    Angular velocity
    Correct
  • D
    Square of angular velocity
4
A particle is executing S.H.M with an amplitude of 4 cm and time period 12 sec. The time taken by the particle in going from its mean position to a position of displacement equal to 2 cm is \({{\rm{T}}_{\rm{1}}}\)..The time taken from this displaced position of 2 cm to reach the extreme position is T2. Therefore, \({{\rm{T}}_{\rm{1}}}\)/ \({{\rm{T}}_{\rm{2}}}\) will be
  • A
    41276.0
    Correct
  • B
    1/ 3
  • C
    2
  • D
    1
5
If the period of oscillation of mass M suspended from a spring is one second, then the period of mass 4 M will be
  • A
    1/ 2s
  • B
    1/ 4s
  • C
    4s
  • D
    2s
    Correct
6
The length of the second’s pendulum on the surface of earth is 1m. The length of second’s pendulum on the surface of moon, where g is 1/6th the value on earth is
  • A
    6m
  • B
    36m
  • C
    1/ 36m
  • D
    1/ 6m
    Correct
7
If the maximum velocity and acceleration of a particle executing S.H.M are equal in magnitude, the time period will be
  • A
    6.28 s
    Correct
  • B
    3.14 s
  • C
    12.56 s
  • D
    1.57 s
8
A particle executes S.H.M along a straight line with amplitude ‘A’. The potential energy is maximum when the displacement is
  • A
    \( \pm \) A\(\sqrt 2 \)
  • B
    \( \pm \) A/2
  • C
    \( \pm \) A
    Correct
  • D
    Zero
9
The potential energy of a particle with displacement x is V(x). The motion is simple harmonic when (k is a positive constant)
  • A
    V= k \({{\rm{x}}^{\rm{2}}}\)
  • B
    V= - k \({{\rm{x}}^{\rm{2}}}\) /2
    Correct
  • C
    V= kx
  • D
    V= k
10
If x, F and V denote the displacement, force acting and the potential energy of a particle then
  • A
    -dV/dx
    Correct
  • B
    + dV/dx
  • C
    V= Fx
  • D
    \({{1dv} \over {xdx}}\)
11
What is the ratio between the height H of a mountain and the depth h of a mine if a pendulum swings with the same period at the top of the mountain and at the bottom of the mine?
  • A
    4
  • B
    41276.0
    Correct
  • C
    2
  • D
    1
12
Time period of a simple pendulum of length l at a place where acceleration due to gravity is g is T. What is the period of a simple pendulum of the same length at a place where the acceleration due to gravity is 1.02 g
  • A
    1.02T
  • B
    1.01T
  • C
    . 0.99T
    Correct
  • D
    T
13
A particle executes a S.H.M with a period of 6 second and amplitude 3 cm. Its maximum speed in cm/sec is
  • A
    \(\pi \) /2
  • B
    \(\pi \)
    Correct
  • C
    \(3\pi \)
  • D
    \(2\pi \)
14
Which one of the following equations does not represent S.H.M?
  • A
    Y= A cos \(\omega \) t + B
  • B
    Y=A sin \(\omega \) t
  • C
    Y= A sin \(\omega \) t + B cos \(\omega \) t
  • D
    Y= A sec \(\omega \) t + B cosec \(\omega \) t
    Correct
15
A 0.5 kg weight attached to a light spring elongates it by 0.981 mm. The natural frequency of the system should be approximately
  • A
    8 Hz
  • B
    16 Hz
    Correct
  • C
    36 Hz
  • D
    16 Hz