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Read of the following two statements I...

Read of the following two statements
I: `sqrt(3)x-y+4=0` is tangent to the circle `x^(2)+y^(2)=4`
II: `y=(sqrt(m^(2)-1))x+-mr` is tangent to the circle `x^(2)+y^(2)=r^(2)`

A

I is true, II is true, II is correct explanation of I.

B

I is true,II is true, II is not correct explanation of I.

C

I is false, II is false

D

I is true , II is true

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-CIRCLES-PRACTICE EXERCISE
  1. The external centre of similitude of the two circles x^(2)+y^(2)-2x-6y...

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  2. It is not possible to find the equation of a cicle I: If radius cent...

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  3. Read of the following two statements I: sqrt(3)x-y+4=0 is tangent to...

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  4. The number of parameters of the equation ax^(2)+ay^(2)+2fy+c=0 is

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  5. If the circles x^(2)+y^(2)=a^(2), x^(2)+y^(2)-6x-8y+9=0 touch external...

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  6. The condition that the circles x^(2)+y^(2)+2ax+c=0, x^(2)+y^(2)+2by+c=...

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  7. The equation to the circle whose radius is 3 and which touches interna...

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  8. A circle of radius 2 units rolls inside the ring of the circle x^(2)+y...

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  9. If 4y=x +7 is a diameter of the circumscribing circle of the rectangle...

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  10. The area of the quadrilateral formed by the tangents from the point (4...

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  11. The area (in sq units) of the triangle formed by the tangent, normal a...

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  12. The area of the triangle formed with coordinate axes and the tangent a...

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  13. The area of the triangle formed by the tangents from (1,3) to the circ...

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  14. The area of an equilateral triangle inscribed in the circle x^(2)+y^(2...

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  15. A right angled isoceles triangle is inscribed in the circle x^(2)+y^(2...

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  16. Observed the following statements I: The intercepts of the circle x^...

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  17. The polar of p with respect to a circle s=x^(2)+y^(2)+2gx+2fy+c=0 with...

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  18. Given that p(x(1),y(1)) is interior point of the circle S=x^(2)+y^(2)+...

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  19. The line y=mx+c intersects the circle x^(2)+y^(2)=r^(2) in two distin...

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  20. The locus of the point (2+3cos theta, 1+3 sin theta) when theta is par...

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