10. 11.
KA) 8.85 x 10-12c?N-'m-2
(B) 8.85 x 10-12 Nm?c-2 (C) 8.85 x 10-2NmC (D) 8.85 x 10
The electrostatic force of repulsion between two electrons at a distance 1m is:
(Rwp 2015)
(A) 2.3 x 10-24 N
(B) 2.3 x 10-20 N
VC) 2.3 x 10-28 N
(D) 2.3 x 10-30 N
Two charges 1 uC and 5 uC separated by 20 cm, the ratio of electrical forces acting on them will be: (Lhr 2016 G II)
(A) 1.2
(B) 1:5
C) 1:1
(D) 5:1
(Lhr 2018 G II, Grw 2017)
1

d) physical means can be used to separate the components of air.

neither accurate nor precise.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.