NEET Physics MCQ: NCERT Spring Oscillations

🔄Ncert Concepts :spring constant, series combination, parallel combination

Related Questions

A mass $m$ hangs vertically from a spring of spring constant $k$ . The spring is then cut into two equal parts, and the mass is hung from one of the parts. The ratio of the frequencies of oscillation before and after cutting the spring is:

1/2

1/√2

√2

Question Tags

🎯Difficulty :Hard

🔄Ncert Concepts :SHM, Spring Constant, Frequency

A block is placed on a frictionless horizontal table. The mass of the block is m and springs are attached on either side with force constants ${{k_1}}$ and ${{k_2}}$ . If the block is displaced a little and left to oscillate, then the angular frequency of oscillation will be

${\left( {\frac{{{K_1} + {K_2}}}{m}} \right)^{1/2}}$

${\left[ {\frac{{{K_1}{K_2}}}{{m\left( {{K_1} + {K_2}} \right)}}} \right]^{1/2}}$

${\left[ {\frac{{{K_1}{K_2}}}{{\left( {{K_1} - {K_2}} \right)m}}} \right]^{1/2}}$

${\left[ {\frac{{K_1^2 + K_2^2}}{{\left( {{K_1} + {K_2}} \right)m}}} \right]^{1/2}}$

Question Tags

🔄Ncert Concepts :Simple Harmonic Motion, Spring Constant, Angular Frequency

Two simple pendulums first of bob mass ${M_1}$ and length ${L_1}$ second of bob mass ${M_2}$ and length ${L_2}$ . ${M_1}$ = ${M_2}$ and ${L_1}$ = ${2L_2}$ . If the vibrational energy of both is same. Then which is correct

A1 = A2

A1 = √2 A2

A1 = 2A2

A1 = A2/2

Question Tags

🎓 Ncert Level:Analyzing

🔄Ncert Concepts :simple harmonic motion, energy of a pendulum, amplitude

The vertical extension in a light spring by a weight of 1 kg suspended from the wire is 9.8 cm. The period of oscillation

$20\pi s$

$2\pi s$

$2\pi /10s$

$200\pi s$

Question Tags

🔄Ncert Concepts :Simple Harmonic Motion, Spring Constant, Time Period

Two identical springs, each with spring constant $k$ , are attached in parallel to a mass $m$ . The time period of oscillation is $T_1$ . If the same two springs are attached in series to the same mass $m$ , the time period of oscillation is $T_2$ . What is the ratio $T_2/T_1$ ?

1/2

√2

Question Tags

PYQ YEAR: 2016

⚡ Time Required :4 mins

🔄Ncert Concepts :Oscillations, Spring-mass system, Springs in series and parallel

$1{\rm{ }}:14$

$1{\rm{ }}:6$

$1{\rm{ }}:9$

$1{\rm{ }}:11$

Question Tags

🔄Ncert Concepts :spring constant, series combination, parallel combination

A simple pendulum is suspended from the ceiling of a lift. When the lift is at rest its time period is T. With what acceleration should the lift be accelerated upwards in order to reduce its period to T⁄2? (g is acceleration due to gravity)

2 g

3 g

4 g

Question Tags

🔄Ncert Concepts :Simple Harmonic Motion, Pendulum Time Period, Effective Gravity

The frequency of oscillation of a spring-mass system is $f$ . If the spring constant is quadrupled, what will be the new frequency?

$f/4$

$f/2$

$2f$

$4f$

Question Tags

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :frequency, spring constant, oscillations

A body having natural frequency $

u $' is executing forced oscillations under a driving force of frequency. The system will vibrate

with frequency of driving force $

u $

with its natural frequency $v{\rm{'}}$

with mean frequency of the two $[\left( {v + v'} \right)/2$

None of the above

Question Tags

🎓 Ncert Level:Understanding