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Three concentric circles of which the bi...

Three concentric circles of which the biggest is `x^2+ y^2= 1`, have their radii in A.P If the line `y= x+1` cuts all the circles in real and distinct points. The interval in which the common difference of the A.P will lie is:

A

`(0, (1)/(4))`

B

`(0, (1)/(2sqrt(2)))`

C

`(0, (2-sqrt(2))/(4))`

D

none

Text Solution

Verified by Experts

The correct Answer is:
C
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