MCQ
A second's pendulum is placed in a space laboratory orbiting around the earth at a height $3R$, where $R$ is the radius of the earth. The time period of the pendulum is
  • A
    $Zero$
  • B
    $2\sqrt 3 \,sec$
  • C
    $4\, sec$
  • Infinite

Answer

Correct option: D.
Infinite
d
(d) In the given case effective acceleration $g_{eff} = 0 $

==> $T = \infty $

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A $U-$ tube with limbs of diameters $5\, mm$ and $2\, mm$ contains water of surface  tension $7 \times 10^{-2}$ newton per metre, angle of contact is zero and density $10^3\, kg/m^3$. If $g$ is $10 \,m/s^2$, then the difference in level of two limbs is :-
A body is projected horizontally with a velocity of $4\,m / s$ from the top of a high tower. The velocity of the body after $0.7\,s$ is nearly $.....\,m/s$ (take $g=10\,m / s ^2$ )
A swimmer can swim with speed '$v$' with respect to still water in a river which is flowing with speed $u$. There is a float moving with the river. Now the swimmer overtakes float and gets a lead of $l$ and returns back to the float. Time taken by swimmer in this process will be
The internal and external radii of a hollow cylinder are measured with the help of a vernier callipers.Their values are $(4.23 \pm 0.01)\,\,cm$ and $(3.87 \pm 0.01)\,\,cm,$ respectively. The thickness of the wall of the cylinder is
At what temperature will the oxygen molecules have the same root mean square speed as hydrogen molecules at $200 \,K$ ....... $K$
Forces ${F_1}$ and ${F_2}$ act on a point mass in two mutually perpendicular directions. The resultant force on the point mass will be
If a cylinder containing a gas at high pressure explodes, the gas undergoes
If the initial tension on a stretched string is doubled, then the ratio of the initial and final speeds of a transverse wave along the string is :
The rate of recombination or generation are governed by the law(s) of
A balloon of mass $m$ is descending down with an acceleration $\frac{g}{2}$.  How much mass should be removed from it so that it starts moving up with same acceleration?