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Points P, Q and R are in vertical line ...

Points ` P, Q` and `R` are in vertical line such that ` PQ =QR`. A ball at (P) is allowed to fall freely. What is the ratio of the times of descent through PQ and QR ?

A

`1:1`

B

`1:sqrt2`

C

`1:(sqrt2+1)`

D

`1:(sqrt2-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The points P (a, b+c), Q (b, c +a) and R(c, a+b) are such that PQ = QR if

    A
    a, b, c are in A.P.
    B
    a, b, c are in G.P.
    C
    a, b, c are in H.P.
    D
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    A
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    B
    `2sqrt2pi`
    C
    `pi`
    D
    none of these

  • P, Q and R are the points so that PR = 3 cm, QR = 5 cm and PQ = 8 cm. The number of circles passing through the points P,Q and R is:

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