Which of the following statements is true about escape velocity?

Related Mcqs:

1. Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the _______?

   A. Centripetal force due to the earth’s rotation
   B. Earth’s gravitational pull
   C. Pressure of the atmosphere
   D. Moon’s gravitational pull

   Submitted by: Rashid Mehmood

2. A body can escape the gravitational pull of the earth if it is thrown up with a velocity of?

   A. 25 miles per sec
   B. 60 miles per sec
   C. 7 miles per sec
   D. 10 miles per sec
   E. None of these

3. A body can escape the gravitational pull of the earth if it is thrown up with a velocity of ________ miles/second ?

   A. 35
   B. 25
   C. 12
   D. 07

   Submitted by: Mansoor Ahmed Suhag

4. Pen and a home which will need more velocity to escape from the earth?

   A. pen needs less velocity
   B. home needs more velocity
   C. both need the same velocity
   D. none

   Submitted by: Syed Ahsan Ali Shah

5. What is the escape velocity on Earth?

   A. 7.9 km/s
   B. 9.8 km/s
   C. 11.2 km/s
   D. 12.4 km/s

   Submitted by: Syed Ahsan Ali Shah

6. Escape velocity depends on ________?

   A. Mass of the object trying to escape
   B. Radius of the planet or celestial body
   C. Both mass and radius of the planet or celestial body
   D. The velocity of the rotating planet

   Submitted by: Syed Ahsan Ali Shah

7. What would happen to the escape velocity if the mass of the Earth were doubled, keeping the radius the same?

   A. It would remain the same
   B. It would increase by a factor of 2sqrt{2}2​
   C. It would double
   D. It would decrease by a factor of 2sqrt{2}2

   Submitted by: Syed Ahsan Ali Shah

8. A rocket needs the speed of _______ to escape from earth’s gravity?

   A. 22 miles per second
   B. 15 miles per second
   C. 12 miles per second
   D. 7 miles per second

   Submitted by: Mansoor Ahmed Suhag

9. Rain drops fall from great height Which among the following statements is true regarding it?

   A. they fall with that ultimate velocity, which are different for different droplets
   B. they fall with same ultimate velocity
   C. their velocity increases and they fall with different velocity on the earth
   D. their velocity increases and they fall with same velocity on the earth

   Submitted by: Abid Hussain

10. Which of the following statements is true when we see ‘rainbow’ ?

    A. We face sun and raindrops
    B. The Sun remains behind us and we face raindrops
    C. In light rainfall, we face Sun
    D. The sky remains clear and the sun is at lower position in the sky

    Submitted by: Abid Hussain