Oscillations Test

Result

Oscillations Test - 41

Score
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Rank
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Weekly Quiz Competition

Question 1
4 / -1

A
7

B
1

C

D

Solution
Question 2
4 / -1

A particle with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force F sin ωt. If the amplitude of the particle is maximum for ω = ω₁ and the energy of the particle is maximum for ω = ω₂, then (where ω₀ natural frequency of oscillation of particle)

A
ω₁ = ω₀ and ω₂ ≠ ω₀

B
ω₁ = ω₀ and ω₂ = ω₀

C
ω₁ ≠ ω₀ and ω₂ = ω₀

D
ω₁ ≠ ω₀ and ω₂ ≠ ω₀

Solution
Question 3
4 / -1

In damped oscillations, the amplitude of oscillations is reduced to one-third of its initial value a₀ at the end of 100 oscillations. When the oscillator completes 200 oscillations, its amplitude must be

A
a₀/2

B
a₀/4

C
a₀/6

D
a₀/9

Solution
Question 4
4 / -1

A
1 : 1

B
1 : 2

C
2 : 1

D

Solution
Question 5
4 / -1

A uniform rod of length L and mass M is pivoted at the centre. Its two ends are attached to two springs of equal spring constants k. The springs are fixed to rigid supports as shown in the figure, and the rod is free to oscillate in the horizontal plane. The rod is gently pushed through a small angle θ in one direction and released. The frequency of oscillation is

A

B

C

D

Solution
Question 6
4 / -1

A

B

C

D

Solution
Question 7
4 / -1

A cylindrical piston of mass M slides smoothly inside a long cylinder closed at one end, enclosing a certain mass of gas. The cylinder is kept with its axis horizontal. If the piston is disturbed from its equilibrium position, it oscillates simple harmonically. The period of oscillation will be

A

B

C

D

Solution
Question 8
4 / -1

The amplitude of vibration of a particle is given by a_m = (a₀) / (aω² – bω + c); where a₀, a, b and c are positive. The condition for a single resonant frequency is

A
b² = 4ac

B
b² > 4ac

C
b² = 5ac

D
b² = 7 ac

Solution
Question 9
4 / -1

A particle is performing simple harmonic motion along x-axis with amplitude 4 cm and time period 1.2 s. The minimum time taken by the particle to move from x = 2 cm to x = + 4 cm and back again is given by

A
0.6 s

B
0.4 s

C
0.3 s

D
0.2 s

Solution
Question 10
4 / -1

A large horizontal surface moves up and down in S.H.M. with an amplitude of 1 cm. If a mass of 10 kg (which is placed on the surface) is to remain continually in contact with it, the maximum frequency of S.H.M. will be

A
0.5 Hz

B
1.5 Hz

C
5 Hz

D
10 Hz

Solution