A particle falls towards earth from infinity. Its velocity on reaching the earth

A particle falls towards earth from infinity. Its velocity on reaching the earth would be

Options

(a) infinity
(b) √(2gR)
(c) 2 √(Rg)
(d) zero

Correct Answer:

√(2gR)

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

View Comments (1)

  • Velocity will be equal to the escape velocity from Earth i,e root over of 2gR

Related Questions

  1. If the radioactive dacay constant of radium is 1.07 x 10⁻⁴ year⁻¹, then its half-life
  2. A car moving with a speed of 50 kmh⁻¹ can be stopped by brakes after at least 6 m
  3. The slope of the graph showing the variation of potential difference V on X-axis
  4. A capacitor is used to store 24 watt hour of energy at 1200 volt.
  5. The Kα X-ray of molybdenum has a wavelength of 71×10⁻¹² m. If the energy of a molybdenum