1
JEE Main 2021 (Online) 17th March Morning Shift
Numerical
+4
-1
Change Language
The radius in kilometer to which the present radius of earth (R = 6400 km) to be compressed so that the escape velocity is increased 10 times is ___________.
Your input ____
2
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
Change Language
If one wants to remove all the mass of the earth to infinity in order to break it up completely.

The amount of energy that needs to be supplied will be $${x \over 5}{{G{M^2}} \over R}$$ where x is __________ (Round off to the Nearest Integer) (M is the mass of earth, R is the radius of earth, G is the gravitational constant)
Your input ____
3
JEE Main 2021 (Online) 26th February Evening Shift
Numerical
+4
-1
Change Language
In the reported figure of earth, the value of acceleration due to gravity is same at point A and C but it is smaller than that of its value at point B (surface of the earth). The value of OA : AB will be x : y. The value of x is ________.

JEE Main 2021 (Online) 26th February Evening Shift Physics - Gravitation Question 100 English
Your input ____
4
JEE Main 2021 (Online) 25th February Evening Shift
Numerical
+4
-1
Change Language
The initial velocity vi required to project a body vertically upward from the surface of the earth to reach a height of 10R, where R is the radius of the earth, may be described in terms of escape velocity ve such that $${v_i} = \sqrt {{x \over y}} \times {v_e}$$. The value of x will be ____________.
Your input ____
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12