A disk has 8 equidistant tracks. The diameters of the innermost and outermost…

GATE · 2005 · IT

A disk has 8 equidistant tracks. The diameters of the innermost and outermost tracks are 1 cm and 8 cm respectively. The innermost track has a storage capacity of 10 MB. If the disk has 20 sectors per track and is currently at the end of the 5th sector of the inner-most track and the head can move at a speed of 10 meters/sec and it is rotating at constant angular velocity of 6000 RPM, how much time will it take to read 1 MB contiguous data starting from the sector 4 of the outer-most track?  

  1. A.

    13.5 ms

  2. B.

    10 ms

  3. C.

    9.5 ms

  4. D.

    20 ms

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