13. oscillations - Gujarat Board (GSEB) STD 11 Science Physics Questions

941

Questions

1

Question groups

5

Question types

01

M.C.Q (1 Marks)

941 Q→

Sample Questions

13. oscillations questions

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

Q 1M.C.Q (1 Marks)1 Mark

If $x=5 \sin \left(\pi t+\frac{\pi}{3}\right) \mathrm{m}$ represents the motion of a particle executing simple harmonic motion, the amplitude and time period of motion, respectively, are

✓
$5 \mathrm{~m}, 2 \mathrm{~s}$
B
$5 \mathrm{~cm}, 1 \mathrm{~s}$
C
$5 \mathrm{~m}, 1 \mathrm{~s}$
D
$5 \mathrm{~cm}, 2 \mathrm{~s}$

Answer: A.

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Q 2M.C.Q (1 Marks)1 Mark

If the mass of the bob in a simple pendulum is increased to thrice its original mass and its length is made half its original length, then the new time period of oscillation is $\frac{x}{2}$ times its original time period. Then the value of $x$ is:

✓
$\sqrt{2}$
B
$2 \sqrt{3}$
C
$4$
D
$\sqrt{3}$

Answer: A.

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Q 3M.C.Q (1 Marks)1 Mark

The $x-t$ graph of a particle performing simple harmonic motion is shown in the figure. The acceleration of the particle at $t=2 s$ is :

✓
$-\frac{\pi^2}{16}\,ms ^{-2}$
B
$\frac{\pi^2}{8}\,ms ^{-2}$
C
$-\frac{\pi^2}{8}\,ms ^{-2}$
D
$\frac{\pi^2}{16}\,ms ^{-2}$

Answer: A.

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Q 4M.C.Q (1 Marks)1 Mark

Two pendulums of length $121\,cm$ and $100\,cm$ start vibrating in phase. At some instant, the two are at their mean position in the same phase. The minimum number of vibrations of the shorter pendulum after which the two are again in phase at the mean position is :