COMEDK 2026 Afternoon Shift | Simple Harmonic Motion Question 1 | Physics

Force constant of interatomic bond, in a certain element, is $7.1 \mathrm{Nm}^{-1}$. If the atom oscillates in SHM in a certain direction, what is its frequency?

Given: Mole weight of the given element is 108 g and Avagadro's number $=6.023 \times 10^{23} \mathrm{~g} \mathrm{~mol}^{-1}$

$3.45 \times 10^{22} s^{-1}$

$0.005 \times 10^{12} s^{-1}$

$1 \times 10^{12} s^{-1}$

$6.667 \times 10^{12} s^{-1}$

COMEDK 2026 Morning Shift

MCQ (Single Correct Answer)

-0

An object of mass 10 g executes SHM along the $x$-axis with frequency of $\left(\frac{10}{\pi}\right) \mathrm{Hz}$. At the point $x=2 \mathrm{~cm}$ the object has KE 1.2 J and PE 0.4 J . The amplitude of oscillation is

8 cm

4 cm

2 cm

6 cm

COMEDK 2025 Afternoon Shift

MCQ (Single Correct Answer)

-0

Time period of oscillation of a mass suspended from a spring is T . If the spring is cut into four equal parts and the same mass is suspended from one of the parts, the fractional change in time period is

$\frac{1}{8}$

$\frac{1}{4}$

$\frac{1}{2}$

$\frac{1}{6}$

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

A body is executing SHM. When its displacements from the mean position are $$4 \mathrm{~cm}$$ and $$5 \mathrm{~cm}$$ it has velocity $$10 \mathrm{~cms}^{-1}$$ and $$8 \mathrm{~cms}^{-1}$$ respectively. Its periodic time $$\mathrm{t}$$ is

$$\frac{2 \pi}{3} \sec$$

2$$\pi$$ sec

$$\frac{3 \pi}{2} \mathrm{sec}$$

$$\pi$$ sec

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