The number of focal chords of length 4-7 in the parabola 7 y 2-8 x isA- zeroB- twoC- infiniteD- one

The correct option is A zeroSince length of latus – rectum = 8/7 Latus rectum is the smallest focal chord Hence focal chord of length 4/7 does not exist. ...

You visited us 7 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XI

Mathematics

Terminologies Related to a Parabola

The number of...

Question

The number of focal chords of length $\frac{4}{7}$ in the parabola $7 y^{2} = 8 x$ is

one

No worries! We‘ve got your back. Try BYJU‘S free classes today!

zero

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

two

No worries! We‘ve got your back. Try BYJU‘S free classes today!

infinite

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B zero
Since length of latus – rectum = $\frac{8}{7}$
Latus-rectum is the smallest focal chord
Hence focal chord of length $\frac{4}{7}$ does not exist.

Suggest Corrections

Similar questions

Q. The number of focal chord(s) of length 4/7 in the parabola

7 y^{2} = 8 x

Q. The number of focal chords of length

\frac{4}{7}

in the parabola

7 y^{2} = 8 x

Q. The total number of focal chord(s) of length

\frac{16}{7}

in the parabola

7 y^{2} = 8 x

Q. The total number of focal chord(s) of length

\frac{16}{7}

in the parabola

7 y^{2} = 8 x

Q. The point

(1, 2)

is one extremity of focal chord of the parabola

y^{2} = 4 x

. The length of this focal chord is

Join BYJU'S Learning Program

The number of focal chords of length 47 in the parabola 7y2=8x is

The correct option is B zeroSince length of latus – rectum = 87 Latus-rectum is the smallest focal chord Hence focal chord of length 47 does not exist.

The number of focal chords of length $\frac{4}{7}$ in the parabola $7 y^{2} = 8 x$ is

The correct option is B zero
Since length of latus – rectum = $\frac{8}{7}$
Latus-rectum is the smallest focal chord
Hence focal chord of length $\frac{4}{7}$ does not exist.