The distance covered by the mass falling from height ' h ' during its time of fall ' t ' is given by s=h=ut+21gt2 As, u=0⇒h=21gt2⇒t= g2 h The time period of simple pendulum is T=2πgl where, lis the length of the pendulum. From Eq. (i) and (ii), since ' h ' and ' l ' are constant so, we can conclude that, t∝gl and T∝gl∴Tt=l Thus, the ratio of time of fall and time period of pendulum is independent of value of gravity (g) or any other parameter like mass and radius of the planet. Thus, the relation between t′ and T′ on another planet irrespective of its mass or radius will remains same as it was on earth i.e. t′=2 T′
A mass falls from a height ' h ' and its time of fall ' t ' is recorded in terms of time period T of a simple pendulum. On the surface of earth it is…
NEET UG 2019 — Physics Waves & Oscillations
2019mcqmedium
A mass falls from a height ' h ' and its time of fall ' t ' is recorded in terms of time period T of a simple pendulum. On the surface of earth it is found that t=2 T. The entire set u is taken on the surface of another planet whose mass is half of earth and radius the same. Same experiment is repeated and corresponding times noted as t′ and T′.
Official previous-year question
Held on 30 Apr 2019 · Verified 9 Jul 2026.
Options
- A
t′=2T′
- B
t′>2T′
- C
t′<2T′
- D
t′=2T′
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Waves & Oscillations in other years
Waves & Oscillations 2025Waves & Oscillations 2024Waves & Oscillations 2023Waves & Oscillations 2022Waves & Oscillations 2021Waves & Oscillations 2020Waves & Oscillations 2018Waves & Oscillations 2017Waves & Oscillations 2016Waves & Oscillations 2015Waves & Oscillations 2014Waves & Oscillations 2013
More NEET UG Waves & Oscillations questions
In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency $\omega(t)$ and average amplitude $A(t)$ of the system change with time $t$. Which one of the following options schematically depicts these changes correctly?
2025medium
Two identical point masses P and Q , suspended from two separate massless springs of spring constants $\mathrm{k}_1$ and $\mathrm{k}_2$, respectively, oscillate vertically. If their maximum speeds are the same, the ratio $\left(A_Q / A_P\right)$ of the amplitude $A_Q$ of mass $Q$ to the amplitude $A_P$ of mass $P$ is :
2025medium
A pipe open at both ends has a fundamental frequency $f$ in air. The pipe is now dipped vertically in a water drum to half of its length. The fundamental frequency of the air column is now equal to :
2025medium
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
2024easy
Let $\omega_1, \omega_2$ and $\omega_3$ be the angular speed of the second hand, minute hand and hour hand of a smoothly running analog clock, respectively. If $x_1, x_2$ and $x_3$ are their respective angular distances in 1 minute then the factor which remains constant $(k)$ is
2024medium
Other Physics topics for NEET UG
Keep practicing Waves & Oscillations
Work through every NEET UG Waves & Oscillations PYQ, year by year.