Home › AP EAPCET (Engineering) › Mathematics › Coordinate Geometry: Parabola › The line y = x cuts a chord on y² = 4x. What is …
The line y = x cuts a chord on y² = 4x. What is the chord length?
A8
B4
C4√2
D2√2
Answer & Solution
Correct answer: C. 4√2
The chord runs from (0, 0) to (4, 4), so its length is the square root of 16 + 16, which is 4√2.
Related questions
A point of y² = 4x is 5 units from the focus. What is its x-coordinate?A point moves so that its distance from (3, 0) equals its distance from x = -3. Find its lA lamp is placed at the focus of a parabolic reflector. The reflected beam isWhich device uses a parabolic reflector to send out a parallel beam?In the pin and string construction, the free edge of the set square slides along theHow far is the focus of y² = 24x from its directrix?What is the tangent at the vertex of y² = 4ax?Apart from the origin, where does y = x meet y² = 4x?