MCQ
An artificial satellite is placed into a circular orbit around earth at such a height that it always remains above a definite place on the surface of earth. Its height from the surface of earth is
  • A
    $6400 \mathrm{~km}$
  • B
    $4800 \mathrm{~km}$
  • C
    $32000 \mathrm{~km}$
  • $36000 \mathrm{~km}$

Answer

Correct option: D.
$36000 \mathrm{~km}$
(d)

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 cricketer hits a ball with a velocity $25 m / s$ at $60^{\circ}$ above the horizontal. How far above the ground it passes over a fielder $50 m$ from the bat (assume the ball is struck very close to the ground)
An electric heater kept in vacuum is heated continuously by passing electric current. Its temperature
Two different loops are concentric and lie in the same plane. The current in the outer loop is clockwise and increasing with time. The induced current in the inner loop then, is
If $r$ represents the radius of the orbit of a satellite of mass $m$ moving around a planet of mass $M$, the velocity of the satellite is given by
The Rydberg constant $R$ for hydrogen is
In a double slit arrangement fringes are produced using light of wavelength $4800 \mathring A$. One slit is covered by a thin plate of glass of refractive index $1.4$ and the other with another glass plate of same thickness but of refractive index $1.7.$ By doing so the central bright shifts to original fifth bright fringe from centre. Thickness of glass plate is
A spring of spring constant $5 \times 10 \mathrm{~N} / \mathrm{m}$ is stretched initially by $5 \mathrm{~cm}$ from the unstretched position. Then the work required to stretch it further by another $5 \mathrm{~cm}$ is
A dip circle is at right angle to the magnetic meridian. What will be the apparent dip
A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed, the tendency to overturn is
A man starts walking from a point on the surface of earth (assumed smooth) and reaches diagonally opposite point. What is the work done by him