NEET UG PHYSICS MCQ: OSCILLATIONS

1 Easy

1 of 1

Application +4 | -1

A copper sphere attached to the bottom of a vertical spring is oscillating with time period

10 \mathrm{~s}

. If the copper sphere is immersed in a fluid (assume the viscosity of the fluid is negligible) of specific gravity

\frac{1}{4}

of that of the copper, then time period of the oscillation is

View answer and explanation

Correct option: B

10 \mathrm{~s}

Option B (

10 \mathrm{~s}

) is correct because the time period of oscillation depends on the effective weight of the sphere, which is reduced by the buoyant force, but the ratio of effective weight to mass remains the same, hence the time period remains the same.

More Questions from OSCILLATIONS

Practice All Chapter MCQs →

A mass m is suspended from a spring of length l and force constant K. The frequency of vibration of the mass is

{f_1}

. The spring is cut into two equal parts and the same mass is suspended from one of the parts. The new frequency of vibration of mass is

{f_2}

. Which of the following relations between the frequencies is correct The time period of a loaded spring on earth is 6s. On the surface of moon, the time period of the same loaded spring will be. Under the action of a force

F=-k x^3

, the motion of a particle is

(k=

a positive constant

)

S-I: A particle executes SHM with frequency

f

. The frequency with which total mechanical energy of particle oscillates is

2 f

.
S-II: Both kinetic as well as potential energy of particle in SHM oscillate with a frequency

2 f.

The phase difference (in radian) between two SHM whose equations are

y_1=10 \sin \left(10 \pi t+\frac{\pi}{3}\right)

and

y_2=12 \sin \left(8 \pi t+\frac{\pi}{4}\right)

t=0.5 \mathrm{~s}

is: A vertical spring block system is made to oscillate.
Statement-1: Its time period on earth is more than that on the moon.
Statement-2: Its extension on earth (in equilibrium) is more than that on the moon.