MCQ
Two bodies are held separated by $9.8\,m$ vertically one above the other. They are released simultaneously to fall freely under gravity. After $2\,s$, the relative distance between them is $............\,m$
- A$4.9$
- B$19.6$
- ✓$9.8$
- D$39.2$
✓
Answer
Correct option: C.
$9.8$
c
(c)
(c)
Both the particles, will fall same distance in same time interval.
So, the relative separation will remain unchanged.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If ${l_1},\,{l_2},\,{l_3}$ are the lengths of the emitter, base and collector of a transistor then
→An infinite plane sheet of charge having uniform surface charge density $+\sigma_5 \mathrm{C} / \mathrm{m}^2$ is placed on $\mathrm{x}-\mathrm{y}$ plane. Another infinitely long line charge having uniform linear charge density $+\lambda_e \mathrm{C} / \mathrm{m}$ is placed at $z=4 \mathrm{~m}$ plane and parallel to $y$-axis. If the magnitude values $\left|\sigma_s\right|=2\left|\lambda_{\mathrm{e}}\right|$ then at point $(0,0,2)$, the ratio of magnitudes of electric field values due to sheet charge to that of line charge is $\pi \sqrt{\mathrm{n}}: 1$. The value of $n$ is
→At the time of total solar eclipse, the spectrum of solar radiation would be
Two light identical springs of spring constant $k$ are attached horizontally at the two ends of a uniform horizontal rod $AB$ of length $l$ and mass $m$. the rod is pivoted at its centre $‘O’$ and can rotate freely in horizontal plane. The other ends of the two springs are fixed to rigid supports as shown in figure. The rod is gently pushed through a small angle and released. The frequency of resulting oscillation is
→In the figure, potential difference between $A$ and $B$ is......$V$
→An uncharged parallel plate capacitor having a dielectric of constant $K$ is connected to a similar air-cored parallel capacitor charged to a potential $V$. The two share the charge and the common potential is $V'$. The dielectric constant $K$ is
→An electron experiences a force equal to its weight when placed in an electric field. The intensity of the field will be
A student plotted the following four graphs representing the variation of velocity of sound in a gas with the pressure $P$. Which one is correct
→A disc of radius $R$ and thickness $\frac {R}{6}$ has moment of inertia $I$ about an axis passing through its centre and perpendicular to its plane. Disc is melted and recast into a solid sphere. The moment of inertia of a sphere about its diameter is
→Photons with energy $5\,\, eV$ are incident on a cathode $C$ in a photoelectric cell. The maximum energy of emitted photoelectrons is $2\,\, e V.$ When photons of energy $6\,\, eV$ are incident on $C,$ no photoelectrons will reach the anode $A,$ if the stopping potential of $A$ relative to $C$ is ............ $V$
→