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The line ax +by+c=0 is an normal to the...

The line ax +by+c=0 is an normal to the circle `x^(2)+y^(2)=r^(2)`. The portion of the line ax +by +c=0 intercepted by this circle is of length

A

`sqrtr`

B

r

C

`r^(2)`

D

2r

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Verified by Experts

The correct Answer is:
D
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ARIHANT MATHS-CIRCLE -Exercise For Session 4
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  9. The angle between a pair of tangents from a point P to the circle x^(2...

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  10. The normal at the point (3,4) on a circle cuts the circle at the poins...

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  12. If the straight line ax + by = 2 ; a, b!=0, touches the circle x^2 +y^...

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  13. Show that the for all values of theta,xsintheta-y=costheta=a touches t...

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  14. Find the equation of the tangents to the circle x^(2)+y^(2)-2x-4y-4=0 ...

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  15. Find the derivative of (ax^2 + b)^2 for some constants a and b .

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  16. The line 4y - 3x + lambda =0 touches the circle x^2 + y^2 - 4x - 8y - ...

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  17. Find the derivative of (x - a)/(x - b) for some constants a and b .

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