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The length of the common chord of two c...

The length of the common chord of two circleS of radii 15 and 20 and whose centres are 25 units apart is

A

24

B

25

C

15

D

20

Text Solution

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The correct Answer is:
A
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HIMALAYA PUBLICATION-CIRCLES-QUESTION BANK
  1. Equation of the circle having normal at (3,3) as the line y=x and pas...

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  2. The line y=x is a tangtnt at (0,0) to a circle of radius unity. The c...

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  3. The length of the common chord of two circleS of radii 15 and 20 and ...

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  4. The equation of the circle whose radius is 5 and which passes throngh ...

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  5. The equation of the circle passing through (2 a, 0) and whose radical...

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  6. The radical axis of the circleS x^(2)+y^(2)+4 x=1 and 4 x^(2)+4 y^(2)...

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  7. The radical axis of the circleS x^(2)+y^(2)+4 x=1 and 4 x^(2)+4 y^(2)...

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  8. The radical centre of the three circleS deseribed on the three sides ...

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  9. A circle passes through the point of intersection of the line x=0 and...

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  10. If 2 x-3 y=0 is the equation of the common chord of the circleS x^(2)...

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  11. The number of tangtnts from (1,2) to the circle x^(2)+y^(2)-2 x-4 y+4...

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  12. If the circleS x^(2)+y^(2)-6 x-8 y+c=0 and x^(2)+y^(2)=9 have three c...

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  13. The ltngth of the tangtnt to the circle x^(2)+y^(2)-2 x-y-7=0 at (-1,...

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  14. The number of common tangtnts to the circleS x^(2)+y^(2)+2 x+8 y-23=0...

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  15. If two circleS x^(2)+y^(2)=4 and x^(2)+y^(2)-24 x-10 y+a^(2)=0 have e...

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  16. The abscissa of two points A and B are the roots of x^(2)-4 x+2=0 and ...

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  17. The image of the circle x^(2)+y^(2)-2 x=0 in the line x+y=2 is the c...

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  18. The ltngth of the chord of the circle x^(2)+y^(2)-6 x+4 y-5=0 interce...

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  19. Image of the circle x^(2)+y^(2)+16 x+18 y+85=0 in the y -axis is

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  20. The equation of a circle with origin as centre and passing through the...

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