Question

two electric charges originally 4 cm apart are brought closer to each other until the force between them becomes or 4 times how much they separated now .
a.1cm c. 2cm
b. 0.5cm d. 0.25cm​

Answer 1

Answer:

B

Explanation:

Because force is inversly proportional to square of dosance

Answer 2

Answer:

C

Explanation:

r1= 4

F1= F

F2=4F

r2= ?

r2 whole square= F1/F2×r1 whole square

in last take under root of the value of r2 whole square.