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A beam of light is sent along the line x...

A beam of light is sent along the line `x-y=1` , which after refracting from the x-axis enters the opposite side by turning through `30^0` towards the normal at the point of incidence on the x-axis. Then the equation of the refracted ray is `(2-sqrt(3))x-y=2+sqrt(3)` `(2+sqrt(3))x-y=2+sqrt(3)` `(2-sqrt(3))x+y=(2+sqrt(3))` `y=(2-sqrt(3))(x-1)`

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A beam of light is sent along the line x-y=1 , which after refracting from the x-axis enters the opposite side by turning through 30^0 towards the normal at the point of incidence on the x-axis. Then the equation of the refracted ray is (a) (2-sqrt(3))x-y=2+sqrt(3) (b) (2+sqrt(3))x-y=2+sqrt(3) (c) (2-sqrt(3))x+y=(2+sqrt(3)) (d) y=(2-sqrt(3))(x-1)

sqrt (2x) -sqrt (3y) = 0sqrt (3x) -sqrt (3y) = 0

A ray of light along x+sqrt(3)y=sqrt(3) gets reflected upon reaching x-axis, the equation of the reflected rays is (1) sqrt(3)y=x-sqrt(3) (2) y=sqrt(3)x-sqrt(3) (3) sqrt(3)y=x-1 (4) y=x+sqrt(3)

sqrt(2)x + sqrt(3)y=0 sqrt(5)x - sqrt(2)y=0

Evaluate : ( sqrt(2)x + sqrt(3)y ) ( sqrt(2)x + sqrt(3)y )

sqrt(2)x+sqrt(3)y=0sqrt(3)x-sqrt(8)y=0

A ray of light along x+sqrt(3)y=sqrt(3) gets reflected upon reaching x-axis,the equation of the reflected ray is: a.y=x+sqrt(3)b .sqrt(3)y=x-sqrt(3)c*y=sqrt(3)x-sqrt(3)dsqrt(3)y=x-1

sqrt(2)x+sqrt(3)y=0 sqrt(3)x+sqrt(8)y=0

If sqrt(3)x-sqrt(2y)=sqrt(3);sqrt(5)x+sqrt(3)y=sqrt(2) then x and y are

if x=sqrt(3)+(1)/(sqrt(3)) and y=sqrt(3)-(1)/(sqrt(3)) then x^(2)-y^(2) is

A DAS GUPTA-Coordinates and Straight Lines-EXERCISE
  1. A ray of light coming fromthe point (1, 2) is reflected at a point A o...

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  2. A man starts from the point P(-3, 4) and will reach the point Q(0, 1) ...

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  3. A beam of light is sent along the line x-y=1 , which after refracting ...

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  4. Show that the points (-2,3), (8, 3) and (6, 7) are the vertices of a r...

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  5. The points (1, - 2), (-3,0) and (5,6) are the vertices of aright angle...

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  6. The distance of (1,2) from the line 3x-4y+15=0 measured parallel to th...

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  7. The set of lines ax + by+ c= 0, where 3a+ 2b+ 4c =0, is concurrent at ...

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  8. If a and b are real numbers between o and 1 such that the points (a,0)...

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  9. If a , ba n dc are in A P , then the straight line a x+b y+c=0 will al...

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  10. Let the algebraic sum of the perpendicular distances from the points (...

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  11. If the point (2a-3, a^2-1) is on the same side of the line x+y-4=0 as ...

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  12. The points (-a,-b), (0,0). (a,b) and (a^(2),a^(3)) are

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  13. The points (0,(8)/(3)), (1,3) and (82,30) are vertices of

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  14. 15. The distance between the lines 3x + 4y = 9 and 6x + 8y = 15 IS: (c...

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  15. The straight lines x+y=0, 3x+y-4=0 and x+3y-4=0 form a triangle which ...

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  16. Three lines px+qy+r=0, qx+ry+p=0 and rx+py+q=0 are concurrent , if

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  17. Given four lines whose equations are x +2y -3=0, 2x+3y-4=0, 3x + 4y -7...

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  18. If P(1,0), Q(-1,0) and R (2,0) are three given points, then the locus ...

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  19. If the sum of the distances of a point from two perpendicular lines in...

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  20. The image of the point (-1,3) by the line x - y = 0 , is

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