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The two circles x^2+y^2=ax and x^2+y^2=c...

The two circles `x^2+y^2=ax and x^2+y^2=c^2(c > 0)` touch each other if (1) `a=2c` (2) `|a|=2c` (3) `2|a|=c` (4) `|a|=c`

A

`2|a| = c`

B

`|a| = c`

C

`a = 2c`

D

`|a| = 2c`

Text Solution

Verified by Experts

The correct Answer is:
B
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