Go To Your Study Dashboard

Get Answers to all your Questions

header-bg

Which of the following are concentric circle
Option: 1
$x^2+y^2=4\;\;\text{and}\;\;x^2+y^2=16$

Option: 2
$x^2+y^2+4x+10\;\;\text{and}\;\;\;x^2+y^2+4x+20=0$

Option: 3
$x^2+y^2+6y+10\;\;\text{and}\;\;\;x^2+y^2+6y-20=0$

Option: 4
All of the above

Answers (1)

best_answer

All the option are correct.

Posted by

sudhir.kumar

View full answer

Similar Questions

Latest Question

At the bottom of a tank having liquid with refractive index, 'm' is a plane mirror. A small object '
Two rods of same length are arranged as shown. The ends are maintained at temperature 100∘c and 70∘c. The temperature at the junction point