Q75.Two vertical poles of height, 20 ๐ and 80 ๐ stand apart on a horizontal plane. The height (in meters) of the point of intersection of the lines joining the top of each pole to the foot of the other, from this horizontal plane is: (1) 16 (2) 12 (3) 18 (4) 15
What This Question Tests
The question uses concepts of similar triangles formed by the poles and the lines connecting their tops to the feet of the other poles to find the height of their intersection point.
Concepts Tested
Formulas Used
Ratio of corresponding sides in similar triangles
๐ NCERT Sections This Tests
2.1 โ Two Charges 5 ร 10โ8 C And โ3 ร 10โ8 C Are Located 16 Cm Apart. At
Physics Class 11 ยท Chapter 2
2.1 Two charges 5 ร 10โ8 C and โ3 ร 10โ8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.
9.8 โ A Beam Of Light Converges At A Point P. Now A Lens Is Placed In The
Physics Class 12 ยท Chapter 9
9.8 A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12cm from P. At what point does the beam converge if the lens is (a) a convex lens of focal length 20cm, and (b) a concave lens of focal length 16cm?
9.16 โ The Pin Appears Raised By 5.0 Cm. It Can Be Seen With An Explicit Ray
Physics Class 12 ยท Chapter 9
9.16 The pin appears raised by 5.0 cm. It can be seen with an explicit ray diagram that the answer is independent of the location of the slab (for small angles of incidence).
๐ Question Details
- Chapter
- Straight Lines
- Topic
- Similar triangles, coordinates and geometry
- Year
- 2019
- Shift
- 08 Apr Shift 2
- Q Number
- Q75
- Type
- MCQ
- NCERT Ref
- Class 10 Mathematics Ch 6: Triangles / Class 11 Mathematics Ch 10: Straight Lines
More from this Chapter
Q91.Let A(h, k), B(1, 1) and C(2, 1) be the vertices of a right angled triangle with AC as its hypotenuse. If the area of the triangle is 1 , then the set of values which ' k ' can take is given by (1) {1, 3} (2) {0, 2} (3) {โ1, 3} (4) {โ3, โ2}
Q92.Let P = (โ1, 0), Q = (0, 0) and R = (3, 3โ3) be three points. The equation of the bisector of the angle PQR (1) โ3x + y = 0 (2) x + โ32 y = 0 (3) โ3 x + y = 0 (4) x + โ3y = 0 2
Q93.If one of the lines of my2 + (1 โm2)xy โmx2 = 0 is a bisector of the angle between the lines xy = 0 , then m is JEE Main 2007 JEE Main Previous Year Paper (1) โ1/2 (2) โ2 (3) 1 (4) 2
Q66.The lines p (p2 + 1)x โy + q = 0 and (p2 + 1)2x + (p2 + 1)y + 2q = 0 are perpendicular to a common line for (1) no value of p (2) exactly one value of p (3) exactly two values of p (4) more than two values of p