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The locus of the center of a variable ci...

The locus of the center of a variable circle which always touches two given circles externally is

A

an ellipse

B

a hyperbola

C

a parabola

D

a circle

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    WB JEE PREVIOUS YEAR PAPER|Exercise MULTIPLE CHOICE QUESTIONS|73 Videos

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2021-MULTIPLE CHOICE QUESTION
  1. If from a point P(a, b, c), perpendiculars PA and PB are drawn to YZ a...

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  2. The co-ordinate of a point on the auxiliary circle of the ellipse x^(2...

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  3. The locus of the center of a variable circle which always touches two ...

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  4. A line with positive direction cosines passes through the point P(2, -...

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  5. For y=sin^(-1){(5x+12sqrt(1-x^(2)))/(13)}, |x| le 1, if a(1-x^(2))y(2...

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  6. f(x) is real valued function such that 2f(x) + 3f(-x) = 15 - 4x for a...

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  7. Consider the functions f(1)(x)=x,f(2)(x)=2+log(e )x, x gt 0. The graph...

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  8. The equation 6^(x)+8^(x)=10^(x) has

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  9. Let f:D to R where D=[0,1] cup [2, 4] be defined by f(x)={(x",","if ...

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  10. Let f(x) be a continuous periodic function with period T. Let I= int(a...

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  11. If b=int(0)^(1) (e^(t))/(t+1)dt, then int(a-1)^(a) (e^(-t))/(t-a-1) is

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  12. The differential of f(x)=log(e ) (1+e^(10x))-tan^(-1) (e^(5x)) at x = ...

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  13. Given that f: S to R is said to have a fixed point at c of S if f(c )...

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  14. The lim(x to oo) ((3x-1)/(3x+1))^(4x) equals

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  15. The area bounded by the parabolas y=4x^(2), y=(x^(2))/(9) and the stra...

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  16. If a(vecalpha xx vecbeta) + b(vecbeta xx vecgamma) +c(vecgamma xx veca...

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  17. If the tangent at the point P with co-ordinates (h, k) on the curve y^...

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  18. The co-efficient of a^(3)b^(4)c^(5) in the expansion of (bc+ca+ab)^(6)...

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  19. Three unequal positive numbers a, b, c are such that a, b, c are in G....

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  20. The determinant |(a^(2)+10,ab, ac),(ab, b^(2)+10, bc),(ac, bc, c^(2)...

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