[" If a variable line,"3x+4y-lambda=0" is such that the two circles "],[x^(2)+y^(2)-2x-2y+1=0" and "x^(2)+y^(2)-18x-2y+78=0" are on "],[" its opposite sides,then the set of all values of "lambda" is the "],[" interval: "]

If a variable line 3x+4y-lamda=0 is such that the two circles x^(2)+y^(2)-2x-2y+1=0 " and" x^(2)+y^(2)-18x-2y+78=0 are on its opposite sides, then the set of all values of lamda is the interval

If a variable line 3x+4y-lamda=0 is such that the two circles x^(2)+y^(2)-2x-2y+1=0 " and" x^(2)+y^(2)-18x-2y+78=0 are on its opposite sides, then the set of all values of lamda is the interval (a) [12,21] (b) (2, 17) (c) (23, 31) (d) [13, 23]

If a variable line 3x+4y-lamda=0 is such that the two circles x^(2)+y^(2)-2x-2y+1=0 " and" x^(2)+y^(2)-18x-2y+78=0 are on its opposite sides, then the set of all values of lamda is the interval (a) [12,21] (b) (2, 17) (c) (23, 31) (d) [13, 23]

The line 4y-3x+lambda=0 touches the circle x^(2)+y^(2)-4x-8y-5=0 then lambda=

If the circles x^(2) + y^(2) - 2lambda x - 2y - 7 = 0 and 3(x^(2) + y^(2)) - 8x + 29y = 0 are orthogonal then lambda =

The line lambda x+mu y=1 is a normal to the circle 2x^(2)+2y^(2)-5x+6y-1=0 if

For what value of lambda, does the line 3x+4y=lambda touch the circle x^(2)+y^(2)=10x